学生成绩管理程序
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\u5b66\u751f\u6210\u7ee9\u7ba1\u7406\u7cfb\u7edf
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** F1 --\u5e2e\u52a9 **
** F2 --\u8f93\u5165\u6570\u636e\u5e76\u5b58\u5165\u6587\u4ef6 **
** F3 --\u6839\u636e\u5b66\u53f7\u67e5\u8be2\u6210\u7ee9 **
** F4 --\u6839\u636e\u59d3\u540d\u67e5\u8be2\u6210\u7ee9 **
** F5 --\u8f93\u51fa\u6587\u4ef6\u5185\u5bb9 **
** F6 --\u7edf\u8ba1\u53ca\u683c\u548c\u4f18\u79c0\u4eba\u6570 **
** ESC--\u9000\u51fa\u7cfb\u7edf **
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\u5728\u754c\u9762\u72b6\u6001\u4e0b\uff0c\u5728\u6309\u4e0b\u201cF4\u201d\u540e\u4f1a\u51fa\u73b0\u201c\u8bf7\u8f93\u5165\u8981\u67e5\u8be2\u7684\u5b66\u751f\u59d3\u540d:\u201d \u8f93\u5165\u201c#\u201d\u7ed3\u675f\u67e5\u8be2\uff0c\u82e5\u6587\u4ef6\u6253\u4e0d\u5f00\u5219\u8f93\u51fa\u4e0b\u9762\u7684\u4fe1\u606f\uff0c\u201c\u6587\u4ef6\u6253\u5f00\u5931\u8d25!\u6309\u4efb\u610f\u952e\u8fd4\u56de...\u201d\uff0c\u5982\u679c\u6587\u4ef6\u6253\u5f00\u4f1a\u6309\u7167\u7528\u6237\u7684\u8981\u6c42\u4ece\u6587\u4ef6\u5934\u5f00\u59cb\u67e5\u8be2\u6ee1\u8db3\u8981\u6c42\u7684\u59d3\u540d\uff0c\u627e\u5230\u5373\u663e\u793a\u8be5\u5b66\u751f\u7684\u57fa\u672c\u4fe1\u606f\u548c\u6210\u7ee9\u3002\u5982\u679c\u672a\u627e\u5230\u5c31\u4f1a\u663e\u793a\u201c\u65e0\u6b64\u5b66\u751f!\u201d\u3002
\uff085\uff09\u8f93\u51fa\u6587\u4ef6\u5185\u5bb9
\u8f93\u51fa\u6587\u4ef6,\u5217\u51fa\u6240\u6709\u5b66\u751f\u6210\u7ee9\u3002\u5982\u679c\u6587\u4ef6\u672a\u6253\u5f00\u4f1a\u51fa\u73b0\u201c\u6587\u4ef6\u6253\u5f00\u5931\u8d25!\u6309\u4efb\u610f\u952e\u8fd4\u56de...\u201d\u6253\u5f00\u6210\u529f\u4f1a\u6bcf\u8f93\u51fa20\u4e2a\u5b66\u751f\u6210\u7ee9\uff0c\u505c\u4e00\u4e0b\u63d0\u793a\uff0c\u201c\u8bf7\u6309\u4efb\u610f\u952e\u7ee7\u7eed...\u201d\uff0c\u5173\u95ed\u6587\u4ef6\u3002
\uff086\uff09\u7edf\u8ba1\u53ca\u683c\u548c\u4f18\u79c0\u4eba\u6570
\u8fd9\u91cc\u7528\u5230\u7ed3\u6784\u4f53\u51fd\u6570\u548c\u53d8\u91cf\uff0c\u5224\u65ad\u6210\u7ee9\u5927\u4e8e\u7b49\u4e8e60\u5206\u7684\u4e3a\u53ca\u683c\uff0c\u5e76\u7edf\u8ba1\u4eba\u6570\uff0c\u5224\u65ad\u6210\u7ee9\u5927\u4e8e\u7b49\u4e8e80\u5206\u7684\u4e3a\u4f18\u79c0\uff0c\u5e76\u7edf\u8ba1\u4eba\u6570\uff0c\u6700\u540e\u7edf\u8ba1\u51fa\u6765\uff0c\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\u3002
\uff087\uff09\u9000\u51fa
\u5728\u754c\u9762\u72b6\u6001\u4e0b\uff0c\u6309\u4e0b\u201cESC\u201d\u4f1a\u9000\u51fa\u8be5\u5b66\u751f\u6210\u7ee9\u7ba1\u7406\u7cfb\u7edf\u3002\u8fd4\u56de\u6e90\u7a0b\u5e8f\u3002
\u7a0b\u5e8f\u6e05\u5355
/*-------------1-------------*/
#include
#include /*\u5934\u6587\u4ef6*/
#include
#include
#include
#include
#include
#include
#define NULL 0
#define ESC 0x001b /* \u9000\u51fa */
#define F1 0x3b00 /* \u67e5\u770b\u5e2e\u52a9\u4fe1\u606f\uff0c\u8c03\u7528HelpMassage()\u51fd\u6570 */
#define F2 0x3c00 /*\u8f93\u5165\u5b66\u751f\u6210\u7ee9*/
#define F3 0x3d00 /*\u6309\u5b66\u53f7\u67e5\u627e*/
#define F4 0x3e00 /*\u6309\u59d3\u540d\u67e5\u627e*/
#define F5 0x3f00 /*\u5217\u51fa\u6240\u6709\u5b66\u751f\u6210\u7ee9*/
#define F6 0x4000 /*\u7edf\u8ba1*/
struct stuType /*\u5b9a\u4e49\u7ed3\u6784\u4f53\u53d8\u91cf*/
{
char NO[11]; /*\u5b66\u53f7\u957f\u5ea6\u4e3a10*/
char XM[10];
float CJ[4]; /*\u5305\u542b4\u95e8\u6210\u7ee9*/
};
/*-------------2-------------*/
int JY_NO(char *stu_num,FILE *fp) /*\u68c0\u9a8c\u5b66\u53f7\u7684\u6b63\u786e\u6027*/
{ struct stuType stud;
int NO;
char *p=stu_num;
if(strcmp(stu_num,"#")==0) return 1; /*\u82e5\u8f93\u5165"#"\u8fd4\u56de\u771f\u503c,\u4e0d\u518d\u5faa\u73af\u8f93\u5165*/
while(*p!='\0') /*\u5b66\u53f7\u5fc5\u987b\u662f\u6570\u5b57\uff0c\u5426\u5219\u8fd4\u56de\u91cd\u65b0\u8f93\u5165*/
{ NO=(int)*p;
if(NO57)
{ puts("\t\t\t\u975e\u6cd5\u5b66\u53f7!\u8bf7\u91cd\u65b0\u8f93\u5165!\n");
return 0;
}
else p++; /*\u6307\u9488\u52a01*/
}
if(strlen(stu_num)!=10) /*\u82e5\u5b66\u53f7\u957f\u5ea6\u4e0d\u4e3a10,\u5219\u8fd4\u56de\u91cd\u65b0\u8f93\u5165*/
{ puts("\t\t\t\u5b66\u53f7\u957f\u5ea6\u4e0d\u5bf9!\n");
return 0;
}
if(getchar()!='\n') /*\u82e5\u5b66\u53f7\u540e\u9762\u7684\u5b57\u7b26\u4e0d\u662f\u56de\u8f66\u7b26\uff0c\u5219\u5b66\u53f7\u957f\u5ea6\u5927\u4e8e10*/
{ printf("\t\t\t\u5b66\u53f7\u957f\u5ea6\u5927\u4e8e10\u4e2a!\u8bf7\u91cd\u65b0\u8f93\u5165!\n");
do{}while(getchar()!='\n'); /*\u7528getchar\u63a5\u6536\u591a\u4f59\u7684\u5b57\u7b26*/
return 0;
}
else
{
rewind(fp); /*\u4f7f\u6587\u4ef6\u6307\u9488\u6307\u5411\u5934*/
while(!feof(fp)) /*\u82e5\u6587\u4ef6\u6307\u9488\u672a\u5230\u7ed3\u5c3e,\u5c31\u7ee7\u7eed\u6267\u884c\u4e0b\u9762\u7684\u5faa\u73af,feof\u9047\u5230\u6587\u4ef6\u7ed3\u675f\u7b26\u8fd4\u56de\u975e\u96f6\u503c,\u5426\u5219\u8fd4\u56de0*/
{ fread(&stud,sizeof(struct stuType),1,fp); /*\u8bfb\u53d6\u4e00\u5b9a\u957f\u5ea6\u7684\u6570\u636e*/
if(strcmp(stu_num,stud.NO)==0) /*\u5b66\u53f7\u7684\u552f\u4e00\u6027*/
{ printf("\t\t\t\u5b66\u53f7\u91cd\u590d\uff0c\u8bf7\u91cd\u65b0\u8f93\u5165!\n");
printf("\t\t\t\u8be5\u5b66\u751f\u6210\u7ee9\u5982\u4e0b\uff1a\n");
printf("\t\t\t\u8bed\u6587\uff1a%.1f\n",stud.CJ[0]);
printf("\t\t\t\u6570\u5b66\uff1a%.1f\n",stud.CJ[1]);
printf("\t\t\t\u82f1\u8bed\uff1a%.1f\n",stud.CJ[2]);
printf("\t\t\t\u603b\u8bc4\uff1a%.1f\n",stud.CJ[3]);
return 0;
}
}
}
return 1;
}
/*-------------3-------------*/
int JY_NO2(char *stu_num) /*\u68c0\u9a8c\u5b66\u53f7*/
{ int NO;
char *p=stu_num;
if(strcmp(stu_num,"#")==0)return 1; /*\u82e5\u8f93\u5165\u201c#\u201d\uff0c\u5219\u8fd4\u56de\u771f\u503c\u7ed3\u675f*/
if(strlen(stu_num)!=10) /*\u5b66\u53f7\u957f\u5ea6\u4e3a10*/
{ puts("\t\t\t\u5b66\u53f7\u957f\u5ea6\u4e0d\u5bf9!\n");
return 0;
}
while(*p!='\0') /*\u5b66\u53f7\u5fc5\u987b\u7528\u6570\u5b57,\u82e5\u5305\u542b\u6709\u5b57\u6bcd\uff0c\u6216\u5176\u5b83\u5b57\u7b26\u5219\u8fd4\u56de\u5047\u503c\u91cd\u65b0\u8f93\u5165*/
{ NO=(int)*p;
if(NO57)
{ puts("\t\t\t\u975e\u6cd5\u5b66\u53f7!\u8bf7\u91cd\u65b0\u8f93\u5165!\n");
return 0;
}
else p++; /*\u6307\u9488\u52a01*/
}
if(getchar()!='\n') /*\u68c0\u9a8c\u5b66\u53f7\u957f\u5ea6\u662f\u5426\u5927\u4e8e10\uff0c\u5e76\u628a\u591a\u4f59\u7684\u5b57\u7b26\u53bb\u6389*/
{ printf("\t\t\t\u5b66\u53f7\u957f\u5ea6\u5927\u4e8e10\u4e2a!\u8bf7\u91cd\u65b0\u8f93\u5165!\n");
do{}while(getchar()!='\n');
return 0;
}
return 1;
}
/*-------------4-------------*/
int JY_XM(char *stu_XM) /*\u68c0\u9a8c\u59d3\u540d*/
{ int PD;
char *p;
p=stu_XM;
while(*p!='\0') /*\u59d3\u540d\u53ea\u80fd\u7528\u4e2d\u6587*/
{
PD=(int)*p;
if(PD>0)
{ puts("\t\t\t\u59d3\u540d\u53ea\u80fd\u7528\u4e2d\u6587\uff0c\u8bf7\u91cd\u65b0\u8f93\u5165\uff01\n");
return 0;
}
else p++; /*\u4f7f\u6307\u9488\u52a01\uff0c\u6307\u5411\u4e0b\u4e00\u6c49\u5b57*/
}
if(getchar()!='\n') /*\u59d3\u540d\u957f\u5ea6\u4e0d\u5f97\u5927\u4e8e5\u4e2a*/
{ printf("\t\t\t\u59d3\u540d\u957f\u5ea6\u5927\u4e8e5\u4e2a!\u8bf7\u91cd\u65b0\u8f93\u5165!\n");
do{}while(getchar()!='\n');
return 0;
}
return 1; /*\u5b57\u7b26\u4e32\u5168\u4e3a\u6c49\u5b57\u8fd4\u56de\u771f*/
}
/*-------------5-------------*/
int JY_CJ(float stu_CJ) /*\u5b66\u751f\u6210\u7ee9\u53ea\u80fd\u57280~100\u4e4b\u95f4*/
{
if(stu_CJ100)
{ printf("\t\t\t\u8f93\u5165\u9519\u8bef\uff0c\u6210\u7ee9\u53ea\u80fd\u57280~100\u4e4b\u95f4!\n");
return 0;
}
return 1;
}
/*-------------6-------------*/
void CreatFile() /*\u8f93\u5165\u6587\u4ef6*/
{ FILE *fp;
struct stuType stu,stu0={"","",}; /*\u5bf9stu0\u5148\u8d4b\u503c*/
fp=fopen("stu.dat","wb+"); /*\u6253\u5f00\u6216\u521b\u5efa\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6587\u4ef6,\u6253\u5f00\u65f6\u5c06\u539f\u6765\u7684\u5185\u5bb9\u5220\u9664*/
if(fp==NULL)
{ printf("\t\t\t\u6587\u4ef6\u6253\u5f00\u5931\u8d25!\n\t\t\t\u6309\u4efb\u610f\u952e\u8fd4\u56de...");
getch();
return;
}
else
{ while(1)
{ stu=stu0;
do{ printf("\n\t\t\t\u8bf7\u8f93\u5165\u5b66\u53f7:"); /*\u8f93\u5165\u5b66\u53f7\u5e76\u68c0\u9a8c\u5176\u6b63\u786e\u6027*/
scanf("%10s",stu.NO);
}while(!JY_NO(stu.NO,fp));
if(strcmp(stu.NO,"#")==0)break;
do{ printf("\n\t\t\t\u8bf7\u8f93\u5165\u59d3\u540d:"); /*\u8f93\u5165\u59d3\u540d\u5e76\u68c0\u9a8c\u5176\u6b63\u786e\u6027*/
scanf("%10s",stu.XM);
}while(!JY_XM(stu.XM));
do{ printf("\n\t\t\t\u8bf7\u8f93\u5165\u8bed\u6587\u6210\u7ee9:"); /*\u8f93\u5165\u6210\u7ee9\u5e76\u68c0\u9a8c\u5176\u6b63\u786e\u6027*/
scanf("%f",&stu.CJ[0]);
}while(!JY_CJ(stu.CJ[0]));
do{ printf("\n\t\t\t\u8bf7\u8f93\u5165\u6570\u5b66\u6210\u7ee9:"); /*\u540c\u4e0a*/
scanf("%f",&stu.CJ[1]);
}while(!JY_CJ(stu.CJ[1]));
do{ printf("\n\t\t\t\u8bf7\u8f93\u5165\u82f1\u8bed\u6210\u7ee9:");
scanf("%f",&stu.CJ[2]);
}while(!JY_CJ(stu.CJ[2]));
do{ printf("\n\t\t\t\u8bf7\u8f93\u5165\u603b\u8bc4\u6210\u7ee9:");
scanf("%f",&stu.CJ[3]);
}while(!JY_CJ(stu.CJ[3]));
fwrite(&stu,sizeof(struct stuType),1,fp); /*\u5199\u6587\u4ef6*/
}
}
fclose(fp); /*\u5173\u95ed\u6587\u4ef6*/
}
/*-------------7-------------*/
void Search_Xuehao() /*\u6309\u5b66\u53f7\u67e5\u8be2*/
{ FILE *fp;
int flag;
struct stuType stu,stud;
fp=fopen("stu.dat","rb");
if(fp==NULL) /*\u82e5\u6587\u4ef6\u6253\u4e0d\u5f00\u5219\u8f93\u51fa\u4e0b\u9762\u7684\u4fe1\u606f*/
{ printf("\t\t\t\u6587\u4ef6\u6253\u5f00\u5931\u8d25!\n\t\t\t\u6309\u4efb\u610f\u952e\u8fd4\u56de...");
getch();
return;
}
else
{ do{ puts("\n\t\t\t\u8f93\u5165\u201c#\u201d\u7ed3\u675f\u67e5\u8be2");
do{ printf("\t\t\t\u8bf7\u8f93\u5165\u8981\u67e5\u8be2\u7684\u5b66\u53f7:");
scanf("%10s",stu.NO);
}while(!JY_NO2(stu.NO));
if(strcmp(stu.NO,"#")==0)break; /*\u82e5\u8f93\u5165\u201c#\u201d\u5219\u7ed3\u675f\u5faa\u73af*/
flag=0;
rewind(fp);
while(fread(&stud,sizeof(struct stuType),1,fp)) /*\u68c0\u67e5\u6587\u4ef6\u6307\u9488\u7ed3\u675f*/
{ if(strcmp(stu.NO,stud.NO)==0) /*\u6bd4\u8f83\u5b66\u53f7*/
{ puts("\t\t\t\u8be5\u5b66\u751f\u6210\u7ee9\u5982\u4e0b\uff1a");
printf("\t\t\t\u5b66\u53f7:%s\n",stud.NO);
printf("\t\t\t\u59d3\u540d:%s\n",stud.XM);
printf("\t\t\t\u8bed\u6587:%.1f\n",stud.CJ[0]);
printf("\t\t\t\u6570\u5b66:%.1f\n",stud.CJ[1]);
printf("\t\t\t\u82f1\u8bed:%.1f\n",stud.CJ[2]);
printf("\t\t\t\u603b\u8bc4:%.1f\n",stud.CJ[3]);
flag=1; /*\u8bb0\u5f55\u5b66\u53f7\u662f\u5426\u67e5\u5230*/
}
}
if(flag==0)puts("\t\t\t\u65e0\u6b64\u5b66\u53f7!");
}while(strcmp(stu.NO,"#")!=0);
}
fclose(fp); /*\u5173\u95ed\u6587\u4ef6*/
}
/*-------------8-------------*/
void Search_Xingming() /*\u6309\u59d3\u540d\u67e5\u627e*/
{ FILE *fp;
int flag=0;
struct stuType stu,stud;
fp=fopen("stu.dat","rb");
if(fp==NULL)
{ printf("\t\t\t\u6587\u4ef6\u6253\u5f00\u5931\u8d25!\n\t\t\t\u6309\u4efb\u610f\u952e\u8fd4\u56de...");
getch();
return;
}
else
{ do{
do{ printf("\t\t\t\u8bf7\u8f93\u5165\u8981\u67e5\u8be2\u7684\u5b66\u751f\u59d3\u540d:");
scanf("%10s",stu.XM);
}while(!JY_XM(stu.XM));
rewind(fp); /*\u6587\u4ef6\u6307\u9488\u6307\u5411\u5934*/
while(fread(&stud,sizeof(struct stuType),1,fp))
{ if(strcmp(stu.XM,stud.XM)==0) /*\u6bd4\u8f83\u59d3\u540d\u662f\u5426\u76f8\u540c*/
{ puts("\t\t\t\u8be5\u5b66\u751f\u59d3\u540d\u5982\u4e0b:");
printf("\t\t\t\u5b66\u53f7\uff1a%s\n",stud.NO);
printf("\t\t\t\u59d3\u540d\uff1a%s\n",stud.XM);
printf("\t\t\t\u8bed\u6587\uff1a%.1f\n",stud.CJ[0]);
printf("\t\t\t\u6570\u5b66\uff1a%.1f\n",stud.CJ[1]);
printf("\t\t\t\u82f1\u8bed\uff1a%.1f\n",stud.CJ[2]);
printf("\t\t\t\u603b\u8bc4\uff1a%.1f\n",stud.CJ[3]);
flag=1; /*\u8bb0\u5f55\u59d3\u540d\u662f\u5426\u88ab\u67e5\u5230*/
}
}
if(flag==0)puts("\n\t\t\t\u65e0\u6b64\u5b66\u751f!");
puts("\t\t\t\u662f\u5426\u7ee7\u7eed(y--\u7ee7\u7eed\uff0c\u5176\u4ed6\u8fd4\u56de)?");
}while(getch()=='y');
}
fclose(fp);
/* puts("\t\t\t\u8bf7\u6309\u4efb\u610f\u952e\u7ee7\u7eed...");*/
/* getch();*/
}
/*-------------9-------------*/
int ListFile(void) /*\u8f93\u51fa\u6587\u4ef6,\u5217\u51fa\u6240\u6709\u5b66\u751f\u6210\u7ee9*/
{ FILE *fp;
int REC=0; /*\u8bb0\u5f55\u5b66\u751f\u4eba\u6570*/
struct stuType stu;
fp=fopen("stu.dat","rb");
if(fp==NULL)
{ printf("\t\t\t\u6587\u4ef6\u6253\u5f00\u5931\u8d25!\n\t\t\t\u6309\u4efb\u610f\u952e\u8fd4\u56de...");
getch();
return 1;
}
else{ printf("\t\t\t\u5b66\u751f\u6210\u7ee9\u5982\u4e0b\uff1a\n");
printf("\t\t\t\u5b66\u53f7\t\t\u59d3\u540d\t\u8bed\u6587\t\u6570\u5b66\t\u82f1\u8bed\t\u603b\u8bc4\n");
rewind(fp);
while(fread(&stu,sizeof(struct stuType),1,fp))
{ /*\u6bcf\u8bfb\u53d6\u4e00\u4e2a\u957f\u5ea6\u7684\u6570\u636e\u5c31\u8f93\u51fa*/
printf("\t\t\t%s",stu.NO);
printf("\t%s",stu.XM);
printf("\t%.1f",stu.CJ[0]);
printf("\t%.1f",stu.CJ[1]);
printf("\t%.1f",stu.CJ[2]);
printf("\t%.1f",stu.CJ[3]);
printf("\n");
REC++;
if(REC%20==0) /*\u6bcf\u8f93\u51fa20\u4e2a\u5b66\u751f\u6210\u7ee9\uff0c\u505c\u4e00\u4e0b*/
{ printf("\t\t\t\u8bf7\u6309\u4efb\u610f\u952e\u7ee7\u7eed...\n");
getch();
}
}
}
fclose(fp); /*\u5173\u95ed\u6587\u4ef6*/
printf("\t\t\t\u8bf7\u6309\u4efb\u610f\u952e\u7ee7\u7eed...");
getch();
}
/*-------------10-------------*/
void Statistics() /*\u7edf\u8ba1\u53ca\u683c\u548c\u4f18\u79c0\u4eba\u6570*/
{ FILE *fp;
int REC=0,pass[4]={0},good[4]={0}; /*REC--\u8bb0\u5f55\u4e2a\u6570,\u5373\u4eba\u6570,pass--\u53ca\u683c\u4eba\u6570,good--\u4f18\u79c0\u4eba\u6570*/
float highest[4]={0},score[4]={0}; /*highest--\u6700\u9ad8\u5206,score--\u603b\u5206*/
struct stuType stu;
fp=fopen("stu.dat","rb");
if(fp==NULL)
{ printf("\t\t\t\u6587\u4ef6\u6253\u5f00\u5931\u8d25!\n\t\t\t\u6309\u4efb\u610f\u952e\u8fd4\u56de...");
getch();
return;
}
else { rewind(fp);
while(fread(&stu,sizeof(struct stuType),1,fp))
{ REC++;
score[0]=score[0]+stu.CJ[0]; /*\u8bed\u6587*/
if(stu.CJ[0]>=60)pass[0]++;
if(stu.CJ[0]>=80)good[0]++;
if(highest[0]<stu.CJ[0])highest[0]=stu.CJ[0];
score[1]=score[1]+stu.CJ[1]; /*\u6570\u5b66*/
if(stu.CJ[1]>=60)pass[1]++;
if(stu.CJ[1]>=80)good[1]++;
if(highest[1]<stu.CJ[1])highest[1]=stu.CJ[1];
score[2]=score[2]+stu.CJ[2]; /*\u82f1\u8bed*/
if(stu.CJ[2]>=60)pass[2]++;
if(stu.CJ[2]>=80)good[2]++;
if(highest[2]<stu.CJ[2])highest[2]=stu.CJ[2];
score[3]=score[3]+stu.CJ[3]; /*\u603b\u8bc4*/
if(stu.CJ[3]>=60)pass[3]++;
if(stu.CJ[3]>=80)good[3]++;
if(highest[3]<stu.CJ[3])highest[3]=stu.CJ[3];
}
if(REC==0) /*\u53ef\u4ee5\u9632\u6b62\u8bb0\u5f55\u4e3a0\u662fREC\u4f5c\u9664\u6570\u800c\u9020\u6210\u7684\u9519\u8bef*/
{ printf("\t\t\t\u672a\u8f93\u5165\u5b66\u751f\u8bb0\u5f55\uff01\u6309\u4efb\u610f\u952e\u8fd4\u56de...");
getch();
return;
}
else{
printf("\t\t\t\t \u8bed\u6587\t \u6570\u5b66\t \u82f1\u8bed\t \u603b\u8bc4\n"); /*\u8f93\u51fa\u7edf\u8ba1\u4fe1\u606f*/
printf("\t\t\t\u5e73\u5747\u5206: %.1f\t %.1f\t %.1f\t %.1f\n",score[0]/REC,score[1]/REC,score[2]/REC,score[3]/REC);
printf("\t\t\t\u6700\u9ad8\u5206\uff1a %.1f\t %.1f\t %.1f\t %.1f\n",highest[0],highest[1],highest[2],highest[3]);
printf("\t\t\t\u4f18\u79c0\u4eba\u6570\uff1a%d\t %d\t %d\t %d\n",good[0],good[1],good[2],good[3]);
printf("\t\t\t\u53ca\u683c\u4eba\u6570\uff1a%d\t %d\t %d\t %d\n",pass[0],pass[1],pass[2],pass[3]);
}
}
fclose(fp);
printf("\n\t\t\t\u8bf7\u6309\u4efb\u610f\u952e\u7ee7\u7eed...");
getch();
}
/*-------------11-------------*/
void HelpMessage()
{ clrscr();
printf("\n\n\n\n\n \u6b64\u7cfb\u7edf\u662f\u5e94\u8001\u5e08\u6240\u5e03\u7f6e\u7684\u4f5c\u4e1a\u7f16\u5236\u800c\u6210\uff0c\u8be5\u7cfb\u7edf\u5177\u6709\u5b58\u8d2e\u5b66\u751f\u6570\u636e\uff0c\u6309\u5b66\u53f7\u3001\u59d3\u540d\u67e5\u8be2\uff0c\u5217\u51fa\u5b66\u751f\u6210\u7ee9\u548c\u7edf\u8ba1\u529f\u80fd\u3002\n \n \u4f7f\u7528\u65b9\u6cd5\uff1a\u7cfb\u7edf\u8f93\u5165\u6570\u636e\u540e\uff0c\u5c06\u5728\u5f53\u524d\u76ee\u5f55\u4e2d\u5efa\u7acb\u4e00\u4e2a\u540d\u4e3astu.dat\u6587\u4ef6\uff0c\u7528\u4e8e\u4fdd\u5b58\u8f93\u5165\u7684\u6570\u636e\u3002\u5b66\u53f7\u8f93\u5165\u53ea\u80fd\u7528\u6570\u5b57\u8f93\u5165\uff0c\u5e76\u4e14\u5b66\u53f7\u53ea\u80fd\u662f10\u4f4d\u3002\u59d3\u540d\u8f93\u5165\u7b26\u5408\u4e2d\u56fd\u4eba\u7684\u59d3\u540d\uff0c\u53ea\u80fd\u7528\u4e2d\u6587,\u4e14\u6700\u957f\u4e3a5\u4e2a\u6c49\u5b57\u3002\n \u6b64\u7a0b\u5e8f\u5728Turbo C2.0\u4e0b\u8fd0\u884c\u901a\u8fc7\n\n \u7531\u4e8e\u662f\u521d\u5b66\u8005\uff0c\u6c34\u5e73\u6709\u9650\u6b64\u7cfb\u7edf\u8fd8\u6709\u8bb8\u591a\u4e0d\u591f\u5b8c\u6574\u548c\u4e25\u5bc6\u6027\uff0c\u656c\u8bf7\u6307\u6b63\uff01");
getch();
}
/*-------------12-------------*/
int GetKey(void) /*\u6b64\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u6309\u952e\u7684\u6570\u503c*/
{ int key;
key=bioskey(0); /*bioskey\u4e3a\u8c03\u7528BIOS\u952e\u76d8\u63a5\u53e3*/
if(key<<8) /*\u4f4d\u79fb*/
{
key=key&0x00ff;
}
return key; /*\u8fd4\u56de\u6309\u952e*/
}
/*-------------13-------------*/
void main()
{ int key;
struct date d; /*\u5b9a\u4e49\u65f6\u95f4\u7ed3\u6784\u4f53*/
getdate(&d); /*\u8bfb\u53d6\u7cfb\u7edf\u65e5\u671f\u5e76\u628a\u5b83\u653e\u5230\u7ed3\u6784\u4f53d\u4e2d*/
clrscr(); /*\u6e05\u9664\u5c4f\u5e55*/
printf("\n\n\n\n\n");
printf("\t\t\t****************************\n"); /*\u7248\u672c\u4fe1\u606f*/
printf("\t\t\t \u5b66\u751f\u6210\u7ee9\u7ba1\u7406\u7cfb\u7edf1.0 \n");
printf("\t\t\t****************************\n");
printf("\t\t\t \u5236\u4f5c\u4eba\uff1a\u5f20\u6625\u8983 \n");
printf("\t\t\t \u6307\u5bfc\u8001\u5e08\uff1a\u6768\u5b87\u6676 \u4e8e\u5b8f\u4f1f \n");
printf("\t\t\t \u5236\u4f5c\u65f6\u95f4\uff1a2005\u5e749\u6708 \n");
printf("\t\t\t****************************\n");
printf("\t\t\t\u8bf7\u6309\u4efb\u610f\u952e\u7ee7\u7eed...");
/*while(!kbhit());*/
getch(); /*\u4ece\u952e\u76d8\u8bfb\u53d6\u4e00\u4e2a\u5b57\u7b26,\u4f46\u4e0d\u663e\u793a\u4e8e\u5c4f\u5e55*/
system("cls"); /*\u8c03\u7528DOS\u7684\u6e05\u5c4f\u51fd\u6570,TC\u4e2d\u53ef\u7528clrscr\u4ee3\u66ff*/
while(1) /*\u4e3b\u83dc\u5355*/
{
printf("\n\n\n\n\n");
printf("\t\t\t************************************\n");
printf("\t\t\t**\tF1 --\u5e2e\u52a9 **\n");
printf("\t\t\t**\tF2 --\u8f93\u5165\u6570\u636e\u5e76\u5b58\u5165\u6587\u4ef6 **\n");
printf("\t\t\t**\tF3 --\u6839\u636e\u5b66\u53f7\u67e5\u8be2\u6210\u7ee9 **\n");
printf("\t\t\t**\tF4 --\u6839\u636e\u59d3\u540d\u67e5\u8be2\u6210\u7ee9 **\n");
printf("\t\t\t**\tF5 --\u8f93\u51fa\u6587\u4ef6\u5185\u5bb9 **\n");
printf("\t\t\t**\tF6 --\u7edf\u8ba1\u53ca\u683c\u548c\u4f18\u79c0\u4eba\u6570 **\n");
printf("\t\t\t**\tESC--\u9000\u51fa\u7cfb\u7edf **\n");
printf("\t\t\t************************************\n");
printf("\n\t\t\t\u8bf7\u8f93\u5165\u9009\u9879\t\t%d\u5e74%d\u6708%d\u65e5\n\n",d.da_year,d.da_mon,d.da_day); /*\u63d0\u793a\u4fe1\u606f,\u5e76\u663e\u793a\u5f53\u524d\u7cfb\u7edf\u65e5\u671f*/
key=GetKey(); /*\u8c03\u7528\u81ea\u5b9a\u4e49\u51fd\u6570,\u8bfb\u53d6\u4e00\u4e2a\u952e*/
switch(key)
{
case F1: HelpMessage(); break;
case F2: CreatFile(); break\uff1b
case F3: Search_Xuehao(); break;
case F4: Search_Xingming();break;
case F5: ListFile(); break;
case F6: Statistics(); break;
case ESC:exit(1); break;
/*default: puts("\t\t\t\u8f93\u5165\u9519\u8bef\u9009\u9879!");
printf("\t\t\t\u6309\u4efb\u610f\u952e\u8fd4\u56de...");
getch();*/
}
clrscr(); /*\u6bcf\u6267\u884c\u5b8c\u4e00\u9879\u529f\u80fd\u540e,\u81ea\u52a8\u6e05\u5c4f*/
}
}
\u8fd9\u4e2a\u6210\u7ee9\u7ba1\u7406\u7a0b\u5e8f\u3002\u5728vc++ \u5b66\u4e60\u6848\u4f8b\u5206\u6790\u91cc\u9762\u5e38\u89c1\uff0c \u53ef\u4ee5\u53bb\u627e\u672c\u8fd9\u6837\u7684\u4e66\u3002COPY\u4ee3\u7801\uff0c\u53ef\u4ee5\u4fee\u6539\u6210\u81ea\u5df1\u7684\u4e1c\u897f\uff01\u53ea\u8981\u4e0d\u7528\u4e8e\u5546\u4e1a\u8d5a\u94b1\u3002\u4e0d\u4f1a\u4fb5\u6743\u7684\uff01
#include<stdio.h> /*引用库函数*/#include<stdlib.h>
#include<ctype.h>
#include<string.h>
typedef struct /*定义结构体数组*/
{
char num[10]; /*学号*/
char name[20]; /*姓名*/
int score; /*成绩*/
}Student;
Student stu[80]; /*结构体数组变量*/
int menu_select() /*菜单函数*/
{
char c;
do{
system("cls"); /*运行前清屏*/
printf("\t\t****Students' Grade Management System****\n"); /*菜单选择*/
printf("\t\t | 1. Input Records |\n");
printf("\t\t | 2. Display All Records |\n");
printf("\t\t | 3. Sort |\n");
printf("\t\t | 4. Insert a Record |\n");
printf("\t\t | 5. Delete a Record |\n");
printf("\t\t | 6. Query |\n");
printf("\t\t | 7. Statistic |\n");
printf("\t\t | 8. Add Records from a Text File|\n");
printf("\t\t | 9. Write to a Text file |\n");
printf("\t\t | 0. Quit |\n");
printf("\t\t*****************************************\n");
printf("\t\t\tGive your Choice(0-9):");
c=getchar(); /*读入选择*/
}while(c<'0'||c>'9');
return(c-'0'); /*返回选择*/
}
int Input(Student stud[],int n) /*输入若干条记录*/
{int i=0;
char sign,x[10]; /*x[10]为清除多余的数据所用*/
while(sign!='n'&&sign!='N') /*判断*/
{ printf("\t\t\tstudent's num:"); /*交互输入*/
scanf("\t\t\t%s",stud[n+i].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n+i].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n+i].score);
gets(x); /*清除多余的输入*/
printf("\t\t\tany more records?(Y/N)");
scanf("\t\t\t%c",&sign); /*输入判断*/
i++;
}
return(n+i);
}
void Display(Student stud[],int n) /*显示所有记录*/
{
int i;
printf("\t\t\t-----------------------------------\n"); /*格式头*/
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(i=1;i<n+1;i++) /*循环输入*/
{
printf("\t\t\t%-16s%-15s%d\n",stud[i-1].num,stud[i-1].name,stud[i-1].score);
if(i>1&&i%10==0) /*每十个暂停*/
{printf("\t\t\t-----------------------------------\n"); /*格式*/
printf("\t\t\t");
system("pause");
printf("\t\t\t-----------------------------------\n");
}
}
printf("\t\t\t");
system("pause");
}
void Sort_by_num(Student stud[],int n) /*按学号排序*/
{ int i,j,*p,*q,s;
char t[10];
for(i=0;i<n-1;i++) /*冒泡法排序*/
for(j=0;j<n-1-i;j++)
if(strcmp(stud[j].num,stud[j+1].num)>0)
{strcpy(t,stud[j+1].num);
strcpy(stud[j+1].num,stud[j].num);
strcpy(stud[j].num,t);
strcpy(t,stud[j+1].name);
strcpy(stud[j+1].name,stud[j].name);
strcpy(stud[j].name,t);
p=&stud[j+1].score;
q=&stud[j].score;
s=*p;
*p=*q;
*q=s;
}
}
int Insert_a_record(Student stud[],int n) /*插入一条记录*/
{char x[10]; /*清除多余输入所用*/
printf("\t\t\tstudent's num:"); /*交互式输入*/
scanf("\t\t\t%s",stud[n].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n].score);
gets(x);
n++;
Sort_by_num(stud,n); /*调用排序函数*/
printf("\t\t\tInsert Successed!\n"); /*返回成功信息*/
return(n);
}
int Delete_a_record(Student stud[],int n) /*按姓名查找，删除一条记录*/
{ char s[20];
int i=0,j;
printf("\t\t\ttell me his(her) name:"); /*交互式问寻*/
scanf("%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判断*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*返回失败信息*/
return(n);
}
for(j=i;j<n-1;j++) /*删除操作*/
{
strcpy(stud[j].num,stud[j+1].num);
strcpy(stud[j].name,stud[j+1].name);
stud[j].score=stud[j+1].score;
}
printf("\t\t\tDelete Successed!\n"); /*返回成功信息*/
return(n-1);
}
void Query_a_record(Student stud[],int n) /*查找并显示一个记录*/
{ char s[20];
int i=0;
printf("\t\t\tinput his(her) name:"); /*交互式输入*/
scanf("\t\t\t%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判断*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*输入失败信息*/
return;
}
printf("\t\t\this(her) number:%s\n",stud[i].num); /*输出该学生信息*/
printf("\t\t\this(her) score:%d\n",stud[i].score);
}
void Statistic(Student stud[],int n) /*新增功能，输出统计信息*/
{ int i,j=0,k=0,sum=0;
float aver; /*成绩平均值*/
for(i=0;i<n;i++) /*循环输入判断*/
{
sum+=stud[i].score;
if(stud[j].score>stud[i].score) j=i;
if(stud[k].score<stud[i].score) k=i;
}
aver=1.0*sum/n;
printf("\t\t\tthere are %d records.\n",n); /*总共记录数*/
printf("\t\t\tthe hignest score:\n"); /*最高分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[j].num,stud[j].name,stud[j].score);
printf("\t\t\tthe lowest score:\n"); /*最低分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[k].num,stud[k].name,stud[k].score);
printf("\t\t\tthe average score is %5.2f\n",aver); /*平均分*/
}
int AddfromText(Student stud[],int n) /*从文件中读入数据*/
{ int i=0,num;
FILE *fp; /*定义文件指针*/
char filename[20]; /*定义文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename); /*输入文件名*/
if((fp=fopen(filename,"rb"))==NULL) /*打开文件*/
{ printf("\t\t\tcann't open the file\n"); /*打开失败信息*/
printf("\t\t\t");
system("pause");
return(n);
}
fscanf(fp,"%d",&num); /*读入总记录量*/
while(i<num) /*循环读入数据*/
{
fscanf(fp,"%s%s%d",stud[n+i].num,stud[n+i].name,&stud[n+i].score);
i++;
}
n+=num;
fclose(fp); /*关闭文件*/
printf("\t\t\tSuccessed!\n");
printf("\t\t\t");
system("pause");
return(n);
}
void WritetoText(Student stud[],int n) /*将所有记录写入文件*/
{
int i=0;
FILE *fp; /*定义文件指针*/
char filename[20]; /*定义文件名*/
printf("\t\t\tWrite Records to a Text File\n"); /*输入文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename);
if((fp=fopen(filename,"w"))==NULL) /*打开文件*/
{
printf("\t\t\tcann't open the file\n");
system("pause");
return;
}
fprintf(fp,"%d\n",n); /*循环写入数据*/
while(i<n)
{
fprintf(fp,"%-16s%-15s%d\n",stud[i].num,stud[i].name,stud[i].score);
i++;
}
fclose(fp); /*关闭文件*/
printf("Successed!\n"); /*返回成功信息*/
}
void main() /*主函数*/
{
int n=0;
for(;;)
{
switch(menu_select()) /*选择判断*/
{
case 1:
printf("\t\t\tInput Records\n"); /*输入若干条记录*/
n=Input(stu,n);
break;
case 2:
printf("\t\t\tDisplay All Records\n"); /*显示所有记录*/
Display(stu,n);
break;
case 3:
printf("\t\t\tSort\n");
Sort_by_num(stu,n); /*按学号排序*/
printf("\t\t\tSort Suceessed!\n");
printf("\t\t\t");
system("pause");
break;
case 4:
printf("\t\t\tInsert a Record\n");
n=Insert_a_record(stu,n); /*插入一条记录*/
printf("\t\t\t");
system("pause");
break;
case 5:
printf("\t\t\tDelete a Record\n");
n=Delete_a_record(stu,n); /*按姓名查找，删除一条记录*/
printf("\t\t\t");
system("pause");
break;
case 6:
printf("\t\t\tQuery\n");
Query_a_record(stu,n); /*查找并显示一个记录*/
printf("\t\t\t");
system("pause");
break;
case 7:
printf("\t\t\tStatistic\n");
Statistic(stu,n); /*新增功能，输出统计信息*/
printf("\t\t\t");
system("pause");
break;
case 8:
printf("\t\t\tAdd Records from a Text File\n");
n=AddfromText(stu,n); /*新增功能，输出统计信息*/
break;
case 9:
printf("\t\t\tWrite to a Text file\n");
WritetoText(stu,n); /*循环写入数据*/
printf("\t\t\t");
system("pause");
break;
case 0:
printf("\t\t\tHave a Good Luck,Bye-bye!\n"); /*结束程序*/
printf("\t\t\t");
system("pause");
exit(0);
}
}
}
四、函数调用关系图
注：“→”代表调用
Input函数
打印链表记录
Display函数
输入若干条记录
menu_select()函数
选择菜单
Sort_by_num函数
显示所有记录
Delete_a_record函数
按姓名查找，删除一条记录
Query_a_record查找并显示一条记录
Statistic函数
输出统计信息 （新增）
AddfromText函数
从正文中添加数据到结构体数组中
Main函数
Insert_a_record插入一条记录
WritetoText函数 将所有数据写入文件中
退出程序
Reverse(head)函数
按学号排序
五、设计测试流程
1、进入界面
2、输入选项1，回车；
按提示输入数据：
3、回到主菜单；
输入选项7，回车；
输入文件名：data.txt，回车；
出现成功提示，则读入文件操作成功。
4、回到主菜单，输入2，回车
每10个暂停显示数据
5、回到主菜单，输入3，回车
出现排序成功信息。
6、回到主菜单，输入4，回车
按提示插入一组数据
7、回到主菜单，输入5，回车
按提示输入姓名，删除数据
出现删除成功的信息
8、回到主菜单，输入6，回车
输入姓名进行查询
9、回到主菜单，输入7，回车
出现统计信息
10、回到主菜单，输入9，回车
输入result.txt，回车
出现成功写入文件的信息
11、回到主菜单，输入0，回车退出系统
回答者：kingkey001 - 试用期 一级 7-14 22:38
修改答复： kingkey001，您要修改的答复如下: 积分规则 关闭
C语言课程设计报告-------学生成绩简单管理程序
一、系统菜单的主要功能
（1）输入若干条记录
（2）显示所有记录
（3）按学号排序
（4）插入一条记录
（5）按姓名查找，删除一条记录
（6）查找并显示一条记录
（7）输出统计信息 （新增）
（8）从正文中添加数据到结构体数组中
（9）将所有数据写入文件中
（0）退出程序
二、题目分析
该题主要考察学生对结构体，指针，文件的操作，以及C语言算法的掌握,所以完成此道题目要求较强的设计能力，尤其是要有一种大局观的意识。如何调程序也非常重要，通过这个程序可以学习到以前调试短程序没有的的经验。
菜单中的每一个选项都对应一个子程序，子程序的算法几乎囊获了所有C语言学过的技巧，下面就各个子程序中的功能进行说明：
功能1和4的算法相似，输入一条记录到结构体中去，其中有一部很关键，就是通过gets将所有的多余的字符，回车读去，否则就会出错。
功能2是显示所有的记录，通过循环输出，格式也比较重要。
功能3为按学号排序，因为学号定义成了字符数组的形式，因此在运用冒泡法进行排序的时候，要用到strcmp,strcpy等函数。
功能5为按姓名删除记录，先输入姓名，再一一比较，如果没有则返回失败信息，如果找到就将此记录都向前移一位，返回n-1。
功能6的算法在5中就已经体现了，输入姓名，一一比较。
功能7为新增的功能，因为考虑到原来给出的函数中竟然没有对学生成绩的统计功能，因此新增此功能，可以得出所有的记录个数，最高、最低、平均分，并输出相关的学生信息等。
功能8和9是对文件的操作，提前准备好数据。
三、程序正文部分
#include<stdio.h> /*引用库函数*/
#include<stdlib.h>
#include<ctype.h>
#include<string.h>
typedef struct /*定义结构体数组*/
{
char num[10]; /*学号*/
char name[20]; /*姓名*/
int score; /*成绩*/
}Student;
Student stu[80]; /*结构体数组变量*/
int menu_select() /*菜单函数*/
{
char c;
do{
system("cls"); /*运行前清屏*/
printf("\t\t****Students' Grade Management System****\n"); /*菜单选择*/
printf("\t\t | 1. Input Records |\n");
printf("\t\t | 2. Display All Records |\n");
printf("\t\t | 3. Sort |\n");
printf("\t\t | 4. Insert a Record |\n");
printf("\t\t | 5. Delete a Record |\n");
printf("\t\t | 6. Query |\n");
printf("\t\t | 7. Statistic |\n");
printf("\t\t | 8. Add Records from a Text File|\n");
printf("\t\t | 9. Write to a Text file |\n");
printf("\t\t | 0. Quit |\n");
printf("\t\t*****************************************\n");
printf("\t\t\tGive your Choice(0-9):");
c=getchar(); /*读入选择*/
}while(c<'0'||c>'9');
return(c-'0'); /*返回选择*/
}
int Input(Student stud[],int n) /*输入若干条记录*/
{int i=0;
char sign,x[10]; /*x[10]为清除多余的数据所用*/
while(sign!='n'&&sign!='N') /*判断*/
{ printf("\t\t\tstudent's num:"); /*交互输入*/
scanf("\t\t\t%s",stud[n+i].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n+i].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n+i].score);
gets(x); /*清除多余的输入*/
printf("\t\t\tany more records?(Y/N)");
scanf("\t\t\t%c",&sign); /*输入判断*/
i++;
}
return(n+i);
}
void Display(Student stud[],int n) /*显示所有记录*/
{
int i;
printf("\t\t\t-----------------------------------\n"); /*格式头*/
printf("\t\t\tnumber name score\n");
printf("\t\t\t-----------------------------------\n");
for(i=1;i<n+1;i++) /*循环输入*/
{
printf("\t\t\t%-16s%-15s%d\n",stud[i-1].num,stud[i-1].name,stud[i-1].score);
if(i>1&&i%10==0) /*每十个暂停*/
{printf("\t\t\t-----------------------------------\n"); /*格式*/
printf("\t\t\t");
system("pause");
printf("\t\t\t-----------------------------------\n");
}
}
printf("\t\t\t");
system("pause");
}
void Sort_by_num(Student stud[],int n) /*按学号排序*/
{ int i,j,*p,*q,s;
char t[10];
for(i=0;i<n-1;i++) /*冒泡法排序*/
for(j=0;j<n-1-i;j++)
if(strcmp(stud[j].num,stud[j+1].num)>0)
{strcpy(t,stud[j+1].num);
strcpy(stud[j+1].num,stud[j].num);
strcpy(stud[j].num,t);
strcpy(t,stud[j+1].name);
strcpy(stud[j+1].name,stud[j].name);
strcpy(stud[j].name,t);
p=&stud[j+1].score;
q=&stud[j].score;
s=*p;
*p=*q;
*q=s;
}
}
int Insert_a_record(Student stud[],int n) /*插入一条记录*/
{char x[10]; /*清除多余输入所用*/
printf("\t\t\tstudent's num:"); /*交互式输入*/
scanf("\t\t\t%s",stud[n].num);
printf("\t\t\tstudent's name:");
scanf("\t\t\t%s",stud[n].name);
printf("\t\t\tstudent's score:");
scanf("\t\t\t%d",&stud[n].score);
gets(x);
n++;
Sort_by_num(stud,n); /*调用排序函数*/
printf("\t\t\tInsert Successed!\n"); /*返回成功信息*/
return(n);
}
int Delete_a_record(Student stud[],int n) /*按姓名查找，删除一条记录*/
{ char s[20];
int i=0,j;
printf("\t\t\ttell me his(her) name:"); /*交互式问寻*/
scanf("%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判断*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*返回失败信息*/
return(n);
}
for(j=i;j<n-1;j++) /*删除操作*/
{
strcpy(stud[j].num,stud[j+1].num);
strcpy(stud[j].name,stud[j+1].name);
stud[j].score=stud[j+1].score;
}
printf("\t\t\tDelete Successed!\n"); /*返回成功信息*/
return(n-1);
}
void Query_a_record(Student stud[],int n) /*查找并显示一个记录*/
{ char s[20];
int i=0;
printf("\t\t\tinput his(her) name:"); /*交互式输入*/
scanf("\t\t\t%s",s);
while(strcmp(stud[i].name,s)!=0&&i<n) i++; /*查找判断*/
if(i==n)
{ printf("\t\t\tnot find!\n"); /*输入失败信息*/
return;
}
printf("\t\t\this(her) number:%s\n",stud[i].num); /*输出该学生信息*/
printf("\t\t\this(her) score:%d\n",stud[i].score);
}
void Statistic(Student stud[],int n) /*新增功能，输出统计信息*/
{ int i,j=0,k=0,sum=0;
float aver; /*成绩平均值*/
for(i=0;i<n;i++) /*循环输入判断*/
{
sum+=stud[i].score;
if(stud[j].score>stud[i].score) j=i;
if(stud[k].score<stud[i].score) k=i;
}
aver=1.0*sum/n;
printf("\t\t\tthere are %d records.\n",n); /*总共记录数*/
printf("\t\t\tthe hignest score:\n"); /*最高分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[j].num,stud[j].name,stud[j].score);
printf("\t\t\tthe lowest score:\n"); /*最低分*/
printf("\t\t\tnumber:%s name:%s score:%d\n",stud[k].num,stud[k].name,stud[k].score);
printf("\t\t\tthe average score is %5.2f\n",aver); /*平均分*/
}
int AddfromText(Student stud[],int n) /*从文件中读入数据*/
{ int i=0,num;
FILE *fp; /*定义文件指针*/
char filename[20]; /*定义文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename); /*输入文件名*/
if((fp=fopen(filename,"rb"))==NULL) /*打开文件*/
{ printf("\t\t\tcann't open the file\n"); /*打开失败信息*/
printf("\t\t\t");
system("pause");
return(n);
}
fscanf(fp,"%d",&num); /*读入总记录量*/
while(i<num) /*循环读入数据*/
{
fscanf(fp,"%s%s%d",stud[n+i].num,stud[n+i].name,&stud[n+i].score);
i++;
}
n+=num;
fclose(fp); /*关闭文件*/
printf("\t\t\tSuccessed!\n");
printf("\t\t\t");
system("pause");
return(n);
}
void WritetoText(Student stud[],int n) /*将所有记录写入文件*/
{
int i=0;
FILE *fp; /*定义文件指针*/
char filename[20]; /*定义文件名*/
printf("\t\t\tWrite Records to a Text File\n"); /*输入文件名*/
printf("\t\t\tInput the filename:");
scanf("\t\t\t%s",filename);
if((fp=fopen(filename,"w"))==NULL) /*打开文件*/
{
printf("\t\t\tcann't open the file\n");
system("pause");
return;
}
fprintf(fp,"%d\n",n); /*循环写入数据*/
while(i<n)
{
fprintf(fp,"%-16s%-15s%d\n",stud[i].num,stud[i].name,stud[i].score);
i++;
}
fclose(fp); /*关闭文件*/
printf("Successed!\n"); /*返回成功信息*/
}
void main() /*主函数*/
{
int n=0;
for(;;)
{
switch(menu_select()) /*选择判断*/
{
case 1:
printf("\t\t\tInput Records\n"); /*输入若干条记录*/
n=Input(stu,n);
break;
case 2:
printf("\t\t\tDisplay All Records\n"); /*显示所有记录*/
Display(stu,n);
break;
case 3:
printf("\t\t\tSort\n");
Sort_by_num(stu,n); /*按学号排序*/
printf("\t\t\tSort Suceessed!\n");
printf("\t\t\t");
system("pause");
break;
case 4:
printf("\t\t\tInsert a Record\n");
n=Insert_a_record(stu,n); /*插入一条记录*/
printf("\t\t\t");
system("pause");
break;
case 5:
printf("\t\t\tDelete a Record\n");
n=Delete_a_record(stu,n); /*按姓名查找，删除一条记录*/
printf("\t\t\t");
system("pause");
break;
case 6:
printf("\t\t\tQuery\n");
Query_a_record(stu,n); /*查找并显示一个记录*/
printf("\t\t\t");
system("pause");
break;
case 7:
printf("\t\t\tStatistic\n");
Statistic(stu,n); /*新增功能，输出统计信息*/
printf("\t\t\t");
system("pause");
break;
case 8:
printf("\t\t\tAdd Records from a Text File\n");
n=AddfromText(stu,n); /*新增功能，输出统计信息*/
break;
case 9:
printf("\t\t\tWrite to a Text file\n");
WritetoText(stu,n); /*循环写入数据*/
printf("\t\t\t");
system("pause");
break;
case 0:
printf("\t\t\tHave a Good Luck,Bye-bye!\n"); /*结束程序*/
printf("\t\t\t");
system("pause");
exit(0);
}
}
}
四、函数调用关系图
注：“→”代表调用
Input函数
打印链表记录
Display函数
输入若干条记录
menu_select()函数
选择菜单
Sort_by_num函数
显示所有记录
Delete_a_record函数
按姓名查找，删除一条记录
Query_a_record查找并显示一条记录
Statistic函数
输出统计信息 （新增）
AddfromText函数
从正文中添加数据到结构体数组中
Main函数
Insert_a_record插入一条记录
WritetoText函数 将所有数据写入文件中
退出程序
Reverse(head)函数
按学号排序
五、设计测试流程
1、进入界面
2、输入选项1，回车；
按提示输入数据：
3、回到主菜单；
输入选项7，回车；
输入文件名：data.txt，回车；
出现成功提示，则读入文件操作成功。
4、回到主菜单，输入2，回车
每10个暂停显示数据
5、回到主菜单，输入3，回车
出现排序成功信息。
6、回到主菜单，输入4，回车
按提示插入一组
地址: http://post.baidu.com/f?kz=227914765
#include<stdio.h>
#include<string.h>
#include<conio.h>
#include<iostream>
using namespace std;
void file();
void init();
void init1();
void init2();
void init3();
void init4();
void doChoice1();
void doChoice2();
void doChoice3();
void doChoice4();
void doChoice5();
#define FORMAT "%-7s%-9s%-10.3f%-14.3f%-12.3f%-14.3f%.3f"
float total_ave,math_ave,data_ave,eng_ave,c_ave;
int n=0;
FILE *fp;
struct student
{
char num[7];
char name[20];
float score[4];
float average;
}stu[80];
struct student *p;
void load(char filename[])
{
n=0;
if((fp=fopen(filename,"rb"))==NULL)
{
printf("Cannot open file.\n");
return;
}
do
{
if(fread(&stu[n],sizeof(struct student),1,fp)!=1)
{
if(feof(fp)) return;
printf("file read error!!!\n\n");
}
n++;
}while(1);
fclose(fp);
}
void save(char filename[])
{
int i;
if((fp=fopen(filename,"wb"))==NULL)
{
printf("Cannot open file.\n");
return;
}
else
{
for(i=0;i<n;i++)
if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
printf("file write error!!!");
fclose(fp);
}
}
void Edit()
{
char choice;
do
{
init();
choice=getch();
if(choice=='1')
doChoice1();
else if(choice=='2')
doChoice2();
else if(choice=='3')
doChoice3();
else if(choice=='4')
doChoice4();
else if(choice=='5')
doChoice5();
else if(choice=='6')
return;
else
printf("Input error!!!!\n\n");
} while(1);
}
void newfile()
{
char ch,filename[15];
do
{
file();
ch=getch();
if(ch=='1')
{
printf("请输入filename:");
gets(filename);
fp=fopen(filename,"wb+");
printf("已成功建立数据库文件。\n\n");
fclose(fp);
}
else if(ch=='2')
{
printf("\n请输入filename:");
gets(filename);
fp=fopen(filename,"rb");
if(fp==NULL) printf("输入有误，不存在该文件！！！\n\n");
else
{
load(filename);
printf("已成功载入数据。\n\n");
}
}
else if(ch=='3')
{
printf("\n");
Edit();
}
else if(ch=='4')
{
printf("\n请输入filename:");
gets(filename);
fp=fopen(filename,"rb");
if(fp==NULL) printf("输入有误，不存在该文件,请新建立文件！！！\n\n");
else
{
save(filename);
printf("已成功保存数据。\n\n");
}
}
else if(ch=='5') return;
else printf("Input error!!!\n\n");
}while(1);
}
int main()
{
system("cls"); //调用函数
printf("\t*****************************************************************\n");
printf("\t\t\t欢迎使用学生考试成绩数据处理系统\n");
printf("\t*****************************************************************\n");
newfile();
printf("谢谢本处理系统。\n");
}
void file()
{
printf("请选择操作菜单:\n");
printf("\t①.建立新的数据文件\n");
printf("\t②.载入数据\n");
printf("\t③.编辑数据\n");
printf("\t④.保存\n");
printf("\t⑤.退出\n");
}
void init()
{
printf("请选择操作菜单:\n");
printf("\t①.增加或删除学生记录\n");
printf("\t②.查询成绩\n");
printf("\t③.统计平均成绩\n");
printf("\t④.不及格统计\n");
printf("\t⑤.特定查询\n");
printf("\t⑥.返回\n");
}
void init1()
{
printf("\n请选择操作菜单:\n");
printf("\t①.增加学生的记录\n");
printf("\t②.删除学生的记录\n");
printf("\t③.返回！！\n");
}
void Add()
{
char c;
do
{
printf("\n请输入学生的学号:");
scanf("%s",stu[n].num);
printf("请输入学生的姓名:");
scanf("%s",stu[n].name);
printf("请输入<数学>成绩:");
scanf("%f",&stu[n].score[0]);
printf("请输入<数据库概论>成绩:");
scanf("%f",&stu[n].score[1]);
printf("请输入<英语>成绩:");
scanf("%f",&stu[n].score[2]);
printf("请输入<C语言程序设计>成绩:");
scanf("%f",&stu[n].score[3]);
getchar();
n++;
printf("继续录入附否？（按y继续，其他退出）");
c=getch();
printf("\n");
}while(c=='y'||c=='Y');
printf("\t数据已成功输入^_^！\n");
}
void Del()
{
int i,flag=1;
char number[8];
printf("请输入学生的学号:");
gets(number);
for(i=0;i<n;i++)
if(strcmp(stu[i].num ,number)==0)
{
stu[i]=stu[n-1];
n--;
flag=0;
}
if(flag) printf("输入有误，不存在该学生数据！！！\n");
printf("\t已成功删除该学生数据^_^！\n");
}
void doChoice1()
{
char choice1;
do
{
init1();
choice1=getch();
if(choice1=='1') Add();
else if(choice1=='2') Del();
else if(choice1=='3') return;
else printf("Input error!!!!\n");
}while(1);
printf("\n");
}
void init2()
{
printf("\n请选择操作菜单:\n");
printf("\t①.输入学号查成绩(包括平均成绩)\n");
printf("\t②.按平均成绩顺序输出学生成绩\n");
printf("\t③.按学号顺序输出所有学生成绩\n");
printf("\t④.按某门课成绩好坏顺序输出学生成绩\n");
printf("\t⑤.返回！！\n");
}
void average()
{
float sum=0,sum0=0,sum1=0,sum2=0,sum3=0;
for(p=stu;p<stu+n;p++)
{
p->average=(p->score[0]+p->score[1]+p->score[2]+p->score[3])/4;
sum=sum+p->average;
sum0=sum0+p->score[0];
sum1=sum1+p->score[1];
sum2=sum2+p->score[2];
sum3=sum3+p->score[3];
}
total_ave=sum/n;
math_ave=sum0/n;
data_ave=sum1/n;
eng_ave=sum2/n;
c_ave=sum3/n;
}
void doChoice2_1()
{
char number[8];
int flag=1;
printf("\n请输入学号:");
gets(number);
for(p=stu;p<stu+n;p++)
if(strcmp(number,p->num)==0)
{
printf("\n姓名%s 数学%.3f 数据库概论%.3f ",p->name,p->score[0],p->score[1]);
printf("\n英语%.3f C语言程序设计%.3f 平均成绩%.3f",p->score[2],p->score[3],p->average);
flag=0;
}
printf("\n");
if(flag) printf("输入有误，没有该学生数据！！！\n");
}
void Oder1()
{
int i,j;
struct student t;
for(i=0;i<=n-2;i++)
for(j=0;j<=n-2-i;j++)
if(stu[j].average<stu[j+1].average)
{
t=stu[j];
stu[j]=stu[j+1];
stu[j+1]=t;
}
}
void Oder2()
{
int i,j;
struct student t;
for(i=0;i<=n-2;i++)
for(j=0;j<=n-2-i;j++)
if(strcmp(stu[j].num,stu[j+1].num)>0)
{
t=stu[j];
stu[j]=stu[j+1];
stu[j+1]=t;
}
}
Print()
{
printf("\n");
printf("学号 姓名 数学 数据库概论 英语 C语言程序设计 平均分 \n ");
printf("-----------------------------------------------------------------------------\n");
for(p=stu;p<stu+n;p++)
{
printf(FORMAT,p->num,p->name,p->score[0],p->score[1],p->score[2],p->score[3],p->average);
printf("\n\n");
}
printf("\n");
}
void Order3(int i)
{
int j,k;
struct student t;
for(j=0;j<=n-2;j++)
{
for(k=0;k<=n-2-j;k++)
if(stu[k].score[i]<stu[k+1].score[i])
{
t=stu[k];
stu[k]=stu[k+1];
stu[k+1]=t;
}
}
}
void doChoice2_4()
{
int i;
average();
printf("\n请输入课程代号(数学0, 数据库概论1, 英语2, C语言程序设计3):");
scanf("%d",&i);
getchar();
if(i<4&&i>=0)
{
Order3(i);
Print();
}
else printf("i值不合要求！！！");
printf("\n");
}
void doChoice2()
{
char choice2;
average();
do
{
init2();
choice2=getch();
if(choice2=='1') doChoice2_1();
else if(choice2=='2')
{
Oder1();
Print();
}
else if(choice2=='3')
{
Oder2();
Print();
}
else if(choice2=='4') doChoice2_4();
else if(choice2=='5') return;
else printf("Input error!!!!\n");
}while(1);
}
void init3()
{
printf("\n请选择操作菜单:\n");
printf("\t①.输出总平均成绩\n");
printf("\t②.输出每门课程平均成绩\n");
printf("\t③.返回！！\n");
}
void doChoice3_1()
{
printf("\n所有学生所有课程的平均成绩为:%.3f\n",total_ave);
printf("\n");
}
void doChoice3_2()
{
printf("\n");
printf("数学平均成绩:%.3f\n数据库概论平均成绩:%.3f\n",math_ave,data_ave);
printf("英语平均成绩:%.3f\nC语言程序设计平均成绩:%.3f\n",eng_ave,c_ave);
printf("\n");
}
void doChoice3()
{
char choice3;
average();
do
{
init3();
choice3=getch();
if(choice3=='1') doChoice3_1();
else if(choice3=='2') doChoice3_2();
else if(choice3=='3') return;
else printf("Input error!!!!\n");
}while(1);
}
void init4()
{
printf("\n请选择操作菜单:\n");
printf("\t①.输出课程有不及格的学生名单\n");
printf("\t②.输出指定课程有不及格的学生名单\n");
printf("\t③.输出有三门或三门以上课程不及格的学生名单\n");
printf("\t④.计算并输出每门课不及格比例\n");
printf("\t⑤.返回！！\n");
}
void doChoice4_1()
{
int flag=1,i;
for(p=stu;p<stu+n;p++)
{
for(i=0;i<4;i++)
if(p->score[i]<60)
{
printf("%s ",p->name);
flag=0;
break;
}
}
if(flag) printf("无人不及格^_^。\n");
else printf("有不及格课程。\n");
}
pass2(int i)
{
int flag=1;
for(p=stu;p<stu+n;p++)
if(p->score[i]<60)
{
printf("%s ",p->name);
flag=0;
}
if(flag) printf("无人不及格^_^。\n");
else printf("不及格\n");
}
void doChoice4_2()
{
int i;
printf("\n请输入课程代号(数学0, 数据库概论1, 英语2, C语言程序设计3):");
scanf("%d",&i);
getchar();
if(i<4&&i>=0) pass2(i);
else printf("i值不合要求！！！");
printf("\n");
}
void doChoice4_3()
{
int i,flag,flag1=1;
for(p=stu;p<stu+n;p++)
{
flag=0;
for(i=0;i<4;i++)
if(p->score[i]<60)
flag++;
if(flag>=3)
{
printf("\t%s有%d门课程不及格\n",p->name,flag);
flag1=0;
}
}
if(flag1) printf("无人有三门或三门以上课程不及格^_^！\n");
printf("\n");
}
void doChoice4_4()
{
int fail[4]={0,0,0,0},i;
for(i=0;i<4;i++)
for(p=stu;p<stu+n;p++)
if(p->score[i]<60)
fail[i]++;
printf("\n");
printf("课程 不及格人数 总人数 \n");
printf("**********************************************************\n");
printf("数学 %d %d \n",fail[0],n);
printf("数据库概论 %d %d \n",fail[1],n);
printf("英语 %d %d \n",fail[2],n);
printf("C语言程序设计 %d %d \n",fail[3],n);
printf("\n");
}
void doChoice4()
{
char choice4;
do
{
init4();
choice4=getch();
if(choice4=='1') doChoice4_1();
else if(choice4=='2') doChoice4_2();
else if(choice4=='3') doChoice4_3();
else if(choice4=='4') doChoice4_4();
else if(choice4=='5') return;
else printf("Input error!!!!\n");
}while(1);
printf("\n");
}
void init5()
{
printf("\n请选择操作菜单:\n");
printf("\t①.输出每门课成绩最好和最差的学生\n");
printf("\t②.总成绩分段查询（如总成绩在300～400）\n");
printf("\t③.各门成绩分段查询（如各门成绩均在80～90）\n");
printf("\t④.返回\n");
}
void doChoice5_1()
{
Oder1();
printf("\n 成绩最好的学生 成绩最差学生\n" );
Order3(0);
printf("数学 %s %s\n",stu[0].name,stu[n-1].name);
Order3(1);
printf("数据库概论 %s %s\n",stu[0].name,stu[n-1].name);
Order3(2);
printf("英语 %s %s\n",stu[0].name,stu[n-1].name);
Order3(3);
printf("C语言程序设计 %s %s\n",stu[0].name,stu[n-1].name);
printf("\n\n");
}
void doChoice5_2()
{
int flag=0;
float M,m;
printf("请输入上限：");
scanf("%f",&M);
printf("\n请输入下限：");
scanf("%f",&m);
getchar();
average();
if(M<m)
{
printf("上限小于下限，输入有误！！！\n");
return;
}
for(p=stu;p<stu+n;p++)
if(p->average>(m/4)&&p->average<(M/4))
{
printf("%s ",p->name);
flag=1;
}
if(flag) printf("总分处在该分数段之间。");
else printf("没有总分处在该分数段之间的学生。");
printf("\n");
}
void doChoice5_3()
{
int flag=1,flag1=1,i;
float M,m;
printf("请输入上限：");
scanf("%f",&M);
printf("\n请输入下限：");
scanf("%f",&m);
getchar();
if(M<m)
{
printf("上限小于下限，输入有误！！！\n");
return;
}
for(p=stu;p<stu+n;p++)
{ flag1=1;
{
for(i=0;i<4;i++)
if(p->score[i]<m||p->score[i]>M) flag1=0;
}
if(flag1) printf("%s ",p->name);
flag=0;
}
if(flag) printf("没有符合条件的学生!");
else printf("所有课程成绩都处在该分数段之间。");
printf("\n");
}
void doChoice5()
{
char choice5;
average();
do
{
init5();
choice5=getch();
if(choice5=='1') doChoice5_1();
else if(choice5=='2') doChoice5_2();
else if(choice5=='3') doChoice5_3();
else if(choice5=='4') return;
else printf("Input error!!!!\n");
}while(1);
printf("\n");
}
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
int INDEX[32];
struct STUDENT
{
int id,age,chinese,math,english;
char name[21];
}students[32];
void page_title(char *menu_item)
{
clrscr();
printf(">>> 学 生 管 理 系 统 <<<\n\n- %s -\n\n",menu_item);
}
void return_confirm(void)
{
printf("\n按任意键返回……\n");
getch();
}
void student_new(void)
{
int n;
page_title("录入学生基本信息");
for(n=0;n<32;n++)
if(students[n].id==0) break;
printf("学号:");
scanf("%d",&students[n].id);
printf("姓名:");
scanf("%s",&students[n].name);
printf("年龄:");
scanf("%d",&students[n].age);
return_confirm();
}
int search_id(void)
{
int n,i;
printf("请输入学生学号:");
scanf("%d",&i);
for(n=0;n<32;n++)
{
if(students[n].id==i&&students[n].id!=0)
{
printf("学号:%d\n",students[n].id);
printf("姓名:%s\n",students[n].name);
printf("年龄:%d\n",students[n].age);
return n;
}
}
printf("\n输入错误或学号不存在.\n");
return -1;
}
void student_del(void)
{
int n;
page_title("注销学生基本信息");
if((n=search_id())!=-1) students[n].id=0;
printf("\n!该学生已注销.\n");
return_confirm();
}
void student_edit(void)
{
int n;
page_title("编辑学生基本信息");
if((n=search_id())!=-1)
{
printf("\n请重新输入新信息:\n学号:");
scanf("%d",&students[n].id);
printf("姓名:");
scanf("%s",&students[n].name);
printf("年龄:");
scanf("%d",&students[n].age);
}
return_confirm();
}
void score_input(void)
{
int s,n,t;
page_title("录入成绩");
printf("\n请用数字键选择科目\n1-语文 2-数学 3-英语\n");
scanf("%d",&s);
for(n=0;n<32;n++)
{
if(students[n].id!=0)
{
printf("学号:%d 姓名:%s 成绩:",students[n].id,students[n].name);
scanf("%d",&t);
switch(s)
{
case 1 : students[n].chinese=t;break;
case 2 : students[n].math=t;break;
case 3 : students[n].english=t;break;
}
}
}
return_confirm();
}
void score_edit(void)
{
int n;
page_title("修改成绩");
if((n=search_id())!=-1)
{
printf("语文:%d 数学:%d 英语:%d\n",students[n].chinese,students[n].math,students[n].english);
printf("\n请重新输入成绩:\n语文:");
scanf("%d",&students[n].chinese);
printf("数学:");
scanf("%s",&students[n].math);
printf("英语:");
scanf("%d",&students[n].english);
}
return_confirm();
}
void sort_it(char nn)
{
int n,m,p,x,t[32];
for(n=0;n<32;n++)
{
switch(nn)
{
case '1' : t[n]=students[n].id;break;
case '2' : t[n]=students[n].chinese;break;
case '3' : t[n]=students[n].math;break;
case '4' : t[n]=students[n].english;break;
case '5' : t[n]=students[n].chinese+students[n].math+students[n].english;break;
}
}
for(n=0;n<32;n++)
{
x=0;
p=-1;
for(m=0;m<32;m++)
{
if(t[m]>x)
{
x=t[m];
p=m;
}
}
t[p]=-1;
INDEX[n]=p;
}
}
void browser(void)
{
int n,x;
char k;
sort_it('1');
while(1)
{
page_title("浏览");
printf("按数字键选择排序方式或按 0 返回\n");
printf("学号-1\t姓名\t\t年龄\t语文-2\t数学-3\t英语-4\t总分-5\n");
for(n=0;n<32;n++)
{
if(INDEX[n]!=-1)
{
x=INDEX[n];
printf("%d\t%s\t",students[x].id,students[x].name);
printf("%d\t%d\t",students[x].age,students[x].chinese);
printf("%d\t%d\t",students[x].math,students[x].english);
printf("%d\n",students[x].chinese+students[x].math+students[x].english);
}
}
k=getch();
if(k<'6'&&k>'0') sort_it(k);
else if(k=='0') break;
else continue;
}
}
void main(void)
{
menu: page_title("操作选单");
printf("请用数字键选择操作\n\n");
printf("1 录入学生基本信息\n2 修改学生基本信息\n");
printf("3 注销学生基本信息\n\n4 录入成绩\n5 修改成绩\n\n");
printf("6 浏览...\n \n0 退出\n");
switch(getch())
{
case '1' : student_new();break;
case '2' : student_edit();break;
case '3' : student_del();break;
case '4' : score_input();break;
case '5' : score_edit();break;
case '6' : browser();break;
case '0' : exit(0);
}
goto menu;
}
我运行过了，保证对的！
记得把分给我哦！
#include <stdio.h>
#include <malloc.h>
#include <string.h>
#include <stdlib.h>
#define InputRcd 1
#define UpdateRcd 2
#define SelectRcd 3
#define Exit 4
#define NAMELEN 16
#define CLASSLEN 6
struct record {
char classID[CLASSLEN];
int term;
char name[NAMELEN];
int chinese,math,english;
};
void showProgInform()
{
printf("-------------------------------------------------\n");
printf("| *** STUDENTS' SCORE PLATFORM *** |\n");;
printf("-------------------------------------------------\n\n");
}
void showMenu() {
system("cls");
showProgInform();
printf("Please select an operation fo the following MENU: \n");
printf(" 1. Input a record \n");
printf(" 2. Update a record\n");
printf(" 3. Select record(s)\n");
printf(" 4. Exit. \n");
}
void inputRecord() {
struct record inscr;
FILE * fp;
system("cls");
showProgInform();
printf("Mention: You are to add new record\n\n");
printf("Please input by the following instructions: \n");
printf("Class ID: ");
scanf("%s",inscr.classID);
printf("Term Number: ");
scanf("%d",&(inscr.term));
printf("Student Name: ");
scanf("%s",inscr.name);
printf("Chinese score: ");
scanf("%d",&(inscr.chinese));
printf("Math score: ");
scanf("%d",&(inscr.math));
printf("English Score: ");
scanf("%d",&(inscr.english));
getchar();
if((fp=(fopen("stu_score.rcd","ab+")))==NULL) {
printf("Input record failed!\n");
return;
}
fwrite(&inscr,sizeof(struct record),1,fp);
fclose(fp);
if((fp=fopen("stu_score.txt","ab+"))==NULL) {
return;
}
fprintf(fp,"%s-%d %s: %d %d %d\r\n",inscr.classID,inscr.term,inscr.name,inscr.chinese,inscr.math,inscr.english);;
fclose(fp);
}
void showSingleRecord(struct record rc) {
printf("%s-%d %s: (CHI)%d (MAT)%d (ENG)%d\n",rc.classID,rc.term,rc.name,rc.chinese,rc.math,rc.english);
}
void updateRecord()
{
long fsize,arraySize,i;
struct record *allRecords,newRcd;
int hasFound = 0;
FILE * fp;
FILE * txt;
system("cls");
showProgInform();
if((fp = fopen("stu_score.rcd","rb")) == NULL ) {
printf("! No records , cannot operate\n");
return;
}
printf("Mention: You are to update record\n\n");
printf("Please the record you want to update by the follow mention: \n");
printf("Class Id: ");
scanf("%s",newRcd.classID);
printf("Term number: ");
scanf("%d",&newRcd.term);
printf("Student name: ");
scanf("%s",newRcd.name);
fseek(fp,0,SEEK_END);
fsize = ftell(fp);
arraySize = fsize/(sizeof(struct record));
allRecords = (struct record *)calloc(arraySize,sizeof(struct record));
rewind(fp);
fread(allRecords,sizeof(struct record),arraySize,fp);
for(i=0;i<arraySize;i++) {
if(strcmp(newRcd.classID,allRecords[i].classID)==0 && newRcd.term==allRecords[i].term && strcmp(newRcd.name,allRecords[i].name)==0) {
printf("Find the matching record: ");
showSingleRecord(allRecords[i]);
printf("Input new Score: \n");
printf("New Chinese Score: ");
scanf("%d",&(allRecords[i].chinese));
printf("New Math Score: ");
scanf("%d",&(allRecords[i].math));
printf("New English Score: ");
scanf("%d",&(allRecords[i].english));
printf("After update ,the records is : \n\t");
showSingleRecord(allRecords[i]);
printf("\n");
hasFound = 1;
break;
}
}
fclose(fp);
if(!hasFound) {
printf("No matching record has found!\n");
free(allRecords);
return;
}
if((fp = fopen("stu_score.rcd","w"))==NULL) {
printf("Write file stu_score.rcd failed\n");
return;
}
if((txt = fopen("stu_score.txt","w"))==NULL) {
printf("Write file stu_score.txt failed\n");
return;
}
fwrite(allRecords,sizeof(struct record),arraySize,fp);
for(i=0;i<arraySize;i++) {
fprintf(txt,"%s-%d %s: %d %d %d\r\n",allRecords[i].classID,allRecords[i].term,allRecords[i].name,allRecords[i].chinese,allRecords[i].math,allRecords[i].english);
}
free(allRecords);
fclose(fp);
fclose(txt);
}
void showSelectMenu(char classID[],int term) {
system("cls");
showProgInform();
printf("Mention: All the following opertion based on classID: %s,Term: %d\n\n",classID,term);
printf("Mention: You are to select the records\n\n");
printf("\t Please choose an operation: \n");
printf("\t 1. Select all records of the classID.\n");
printf("\t 2. Sort by the average score.\n");
printf("\t 3. Select no passed record.\n");
printf("\tOther. Return the high level menu.\n\n");
}
void showStatistic(struct record *r ,long size,char classID[],int term) {
int total;
float ave;
long i;
system("cls");
showProgInform();
printf("All records for class: %s,term: %d; total record nubmer: %ld\n",classID,term,size);
printf("********************************************************\n");
for(i=0;i<size;i++) {
total = r[i].chinese+r[i].english +r[i].math ;
ave = (float)total/3;
printf(" %s: (CHI)%d (MAT)%d (ENG)%d (Total)%d (Ave)%.2f\r\n",r[i].name,r[i].chinese,r[i].math,r[i].english,total,ave);
}
printf("********************************************************\n\n");
printf("Press Enter to return Select submenu\n");
getchar();
}
void sortSelectByAve(struct record * r,long size) {
FILE *fp;
struct record temp;
float outerAve ,innerAve;
int total;
long i,j;
system("cls");
showProgInform();
printf("\nSorted the records by average score\n");
for(i=0;i<size;i++) {
outerAve = (float)(r[i].chinese+r[i].math+r[i].english)/3;
for(j=i+1;j<size;j++) {
innerAve = (float)(r[j].chinese+r[j].math+r[j].english)/3;
if(innerAve > outerAve) {
strcpy(temp.name,r[j].name);
temp.chinese = r[j].chinese;
temp.math = r[j].math ;
temp.english = r[j].english ;
strcpy(r[j].name,r[i].name);
r[j].chinese = r[i].chinese ;
r[j].math = r[i].math ;
r[j].english = r[i].english ;
strcpy(r[i].name,temp.name);
r[i].chinese = temp.chinese ;
r[i].math = temp.math ;
r[i].english = temp.english ;
}
}
}
printf("\nshow sorted records \n");
printf("********************************************\n");
for(i=0;i<size;i++) {
total = r[i].chinese + r[i].math + r[i].english ;
innerAve = (float)total/3;
printf("%s: %d %d %d %d %f\n",r[i].name,r[i].chinese,r[i].math,r[i].english,total,innerAve);
}
printf("********************************************\n");
printf("write sorted records to \"sorted.txt\"\n");
if((fp = fopen("sorted.txt","w"))== NULL) {
printf("open sort.txt failed\n");
return;
}
for(i=0;i<size;i++) {
total = r[i].chinese + r[i].math + r[i].english ;
innerAve = (float)total/3;
fprintf(fp,"(CLASS-TERM)%s-%d (NAME)%s: (CHI)%3d (MAT)%3d (ENG)%3d (TOTAL)%4d (AVERG)%.2f\r\n",r[i].classID,r[i].term,r[i].name,r[i].chinese,r[i].math,r[i].english,total,innerAve);
}
printf("write file sorted.txt finished\n");
fclose(fp);
printf("\nPress any key to return Select subMenu\n");
}
void noPass(struct record * r,int size) {
long i=0,j=0;
FILE * fp;
if((fp=fopen("no-pass.txt","w"))==NULL) {
printf("create no-pass.txt failed");
return;
}
system("cls");
showProgInform();
printf("Mention: The following operation will be all on the classId and term you input\n\n");
printf("\nShow student that one subject is no-pass\n");
printf("***********************************************\n");
for(i=0;i<size;i++) {
if(r[i].chinese <60 || r[i].math<60 || r[i].english <60) {
printf("%s-%d %s: ",r[i].classID,r[i].term,r[i].name);
fprintf(fp,"%s-%d %s: ",r[i].classID,r[i].term,r[i].name);
if(r[i].chinese < 60 ) {
printf("(Chinese)%d ",r[i].chinese);
fprintf(fp,"(Chinese)%d ",r[i].chinese );
}
if(r[i].math < 60) {
printf("(Math)%d ",r[i].math);
fprintf(fp,"(Math)%d ",r[i].math);
}
if(r[i].english < 60) {
printf("(English)%d",r[i].english);
fprintf(fp,"(English)%d",r[i].english);
}
printf("\r\n");
fprintf(fp,"\r\n");
}
}
printf("***********************************************\n");
fclose(fp);
printf("Press Enter to return \"Select\" submenu\n");
}
void selectRecord() {
char classID[CLASSLEN];
int term;
FILE * fp;
long fsize=0,arraySize=0,thisSize=0,i=0,j=0;
struct record *allRcd,*thisClass;
system("cls");
showProgInform();
printf("Mention: The following operation will be all on the classId and term you input\n\n");
printf("Mention: please operate by the following instructions\n\n");
printf("Input ClassID: ");
scanf("%s",classID);
printf("Input term number: ");
scanf("%d",&term);
if((fp=fopen("stu_score.rcd","r"))==NULL) {
printf("\nWarining: No record exists!\n");
return;
}
fseek(fp,0,SEEK_END);
fsize = ftell(fp);
arraySize = fsize/(sizeof(struct record));
allRcd = (struct record *)calloc(arraySize,sizeof(struct record));
rewind(fp);
fread(allRcd,sizeof(struct record),arraySize,fp);
printf("Press Enter to show the sub menu of Select menu\n");
for(i=0;i<arraySize;i++) {
if(strcmp(classID,allRcd[i].classID)==0 && term==allRcd[i].term) {
thisSize++;
}
}
if(thisSize==0) {
printf("\nWaring: No record for Class %s Term %d\n",classID,term);
fclose(fp);
free(allRcd);
return;
}
thisClass = (struct record *)calloc(thisSize,sizeof(struct record));
j=0;
for(i=0;i<arraySize;i++) {
if(strcmp(classID,allRcd[i].classID)==0 && term==allRcd[i].term ) {
strcpy(thisClass[j].classID,classID) ;
thisClass[j].term = term ;
strcpy(thisClass[j].name,allRcd[i].name);
thisClass[j].chinese = allRcd[i].chinese;
thisClass[j].math = allRcd[i].math ;
thisClass[j].english = allRcd[i].english ;
j++;
}
}
free(allRcd);
/////////////////////////////////////////////////////////////
getchar();
getchar();
while(1) {
system("cls");
showProgInform();
printf("Mention: The following operation will be all on the classId and term you input\n\n");
showSelectMenu(classID,term);
switch(getchar()) {
case '1':
getchar();
showStatistic(thisClass,thisSize,classID,term);
break;
case '2':
getchar();
sortSelectByAve(thisClass,thisSize);
getchar();
break;
case '3':
getchar();
noPass(thisClass,thisSize);
printf("0: Press 0 to return \"Select\" submenu\n");
if(getchar()=='0')
break;
default:
getchar();
return;
}
}
free(thisClass);
fclose(fp);
}
void go_on() {
printf("Press Enter to continue\n");
getchar();
}
void main() {
showProgInform();
while(1) {
showMenu();
switch(getchar()) {
case '1':
getchar();
inputRecord();
go_on();
break;
case '2':
getchar();
updateRecord();
getchar();
go_on();
break;
case '3':
getchar();
selectRecord();
getchar();
go_on();
break;
case '4':
getchar();
//exit(1);
return;
default:
getchar();
printf("Wrong Option! input again\n");
go_on();
break;
}
}
}
我要求实现如下功能：建立文件、增加学生记录、新建学生信息文件、显示记录、文件存储、读取文件、删除记录、修改记录、查询记录、对记录进行排序、测试程序，最好不低于500行。
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