求高手知道菜鸟C语言
c\u8bed\u8a00\u83dc\u9e1f\u6c42\u6559#include<stdio.h>#include<stdlib.h>struct Student{int Number;char *Name;int Telephone;char *Address;};void main(){Student stu[3];for(int i=0;i<3;i++){stu[i].Name=(char*)malloc(10);stu[i].Address=(char*)malloc(10);printf("\u8bf7\u8f93\u5165\u7b2c%d\u4e2a\u5b66\u751f\u7684\u4fe1\u606f\uff1a \n",i+1);printf("the number:");scanf("%d",&stu[i].Number);printf("the name:");scanf("%s",stu[i].Name);printf("the telephone:");scanf("%d",&stu[i].Telephone);printf("the address:");scanf("%s",stu[i].Address);}printf("\u5b66\u751f\u4fe1\u606f\u5982\u4e0b\uff1a\n");for(int i=0;i<3;i++){printf("student number:%d name:%c telephone:%d address:%c \n",&stu[i].Number,*stu[i].Name,&stu[i].Telephone,*stu[i].Address);}system("Pause");}\u7b2c\u4e8c\u9898\uff1a
#include<stdio.h>#include<stdlib.h>struct Student{int Number;char *Name;int Telephone;char *Address;};void input(struct Student stu[], int n){stu[n].Name=(char*)malloc(10);stu[n].Address=(char*)malloc(10);printf("\u8bf7\u8f93\u5165\u7b2c%d\u4e2a\u5b66\u751f\u7684\u4fe1\u606f\uff1a \n",n+1);printf("the number:");scanf("%d",&stu[n].Number);printf("the name:");scanf("%s",stu[n].Name);printf("the telephone:");scanf("%d",&stu[n].Telephone);printf("the address:");scanf("%s",stu[n].Address);}void print(struct Student stu[], int n){printf("student number:%d name:%c telephone:%d address:%c \n",&stu[n].Number,*stu[n].Name,&stu[n].Telephone,*stu[n].Address);}void main(){Student stu[3];for(int i=0;i<3;i++){input(stu,i);}printf("\u5b66\u751f\u4fe1\u606f\u5982\u4e0b\uff1a\n");for(int i=0;i<3;i++){print(stu,i);}system("Pause");}\u5982\u6709\u4e0d\u6e05\u695a\u7684\u5730\u65b9\u8bf7\u8ffd\u95ee\u3002\u671b\u91c7\u7eb3
\u5e94\u8be5\u662f\u4f60\u6ca1\u6709\u5b9a\u4e49max\u51fd\u6570\u5427\uff0c\u8981\u5728main\u51fd\u6570\u4e4b\u524d\u5b9a\u4e49\u4e00\u4e2amax\u51fd\u6570\uff0c\u5177\u4f53\u5982\u4e0b\u6240\u793a\uff1a
int max(int a,int b)
{
if(a>=b) return a;
else return b;
}
\u6bcf\u4e2a\u51fd\u6570\u4f7f\u7528\u524d\u90fd\u662f\u8981\u5b9a\u4e49\u7684\uff0c\u9664\u975e\u5934\u6587\u4ef6\u4e2d\u5305\u62ec\u4e86\u8fd9\u4e2a\u51fd\u6570\uff0c\u4e0d\u77e5\u9053\u8fd9\u6837\u4f60\u6ee1\u610f\u4e0d\uff1f
#include "conio.h"
#include "stdio.h"
int mysum(int m,int n)
{
int k;
k=m+n;
return k;
}
void main()
{ int a,b,x;
double c,y,z;
c=4.0;
y=sqrt(c);
a=10;b=20;
x=mysum(a,b);
z=x+y;
printf("z=%lf\n",z);
printf("let is study the C language.\n") ;
printf("Hello, world\n");
getch();
}
把子函数主函数的后面，主函数对子函数进行调用要先声明，像我那样把子函数写在主函数前面就不用声明
还有写程序的时候，多写标注，不然以后也许你也看不懂了
不好意思，刚才没看见习题``````
当一个外文件的函数被引用时，必需要对其进行声明，就像sqrt（）这个函数，定义在math.h里，想调用它就得包含这个文件，如果你的文件中引用了一个未声明的函数，有些编译器会对这类函数做默认类型处理，这就跟编译协议有关了，所以这个数是没有多大意思的，先声明，再调用，才是硬道理！！！
编译过了是代表语法没有错误，但在运行是出现负数，是可能程序写得不规范，出现了误运算、、
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