C语言用scanf输入一个%s的字符串 怎么判断其中的内容？ c语言关于字符串用scanf输入的问题

C\u8bed\u8a00scanf\u51fd\u6570\u8f93\u5165\u5355\u4e2a\u5b57\u7b26%c\u7528%s\u4ee3\u66ff

\u5728\u6700\u524d\u9762\u52a0\u4e0a#include
\u53ef\u4ee5\u4f7f\u7528flag=getch();
\u8fbe\u5230\u4e00\u6837\u7684\u6548\u679c\uff0c\u800c\u4e14\u6ca1\u6709\u56de\u663e\uff0c\u5982\u679c\u8981\u56de\u663e\uff0c\u5728flag=getch();\u540e\u9762\u52a0\u4e0a
printf("%c\n",flag);
\u8fd9\u6837\u5373\u53ef\uff0c
\u628a%c\u6539\u6210%s\u7684\u539f\u56e0\uff1a%c\u8868\u793a\u4e00\u4e2a\u5b57\u7b26\uff0c%s\u8868\u793a\u5b57\u7b26\u4e32\uff0c\u5efa\u8bae\u4e0d\u8981\u968f\u4fbf\u7ed9char\u7528%s\uff0c\u56e0\u4e3a\u8fd9\u6709\u53ef\u80fd\u5bfc\u81f4\u5d29\u6e83
\u53e6\u5916\uff0c\u7531\u4e8e\u8f93\u5165\u8fc7\u7a0b\u662f\u8fd9\u6837\u7684\uff1a
\u8f93\u5165y\uff1a\u5411stdin\u6d41\u53d1\u9001y
\u8f93\u5165\u56de\u8f66\uff1a\u5411stdin\u6d41\u53d1\u9001\u56de\u8f66\uff0c\u7136\u540e\u53d1\u9001\u6362\u884c
\u6700\u540e\uff0c\u8f93\u5165\u7684\u65f6\u5019\uff0c\u7531\u4e8e\u56de\u8f66\u6ca1\u6709\u88ab\u5904\u7406\u6389\uff0c\u6240\u4ee5\u76f4\u63a5\u4ece\u6d41\u4e2d\u63d0\u53d6\u4e86\uff0c\u4e8e\u662f\u4ea7\u751f\u4e86\u9519\u8bef
\u4f7f\u7528fflush(stdin);\u6e05\u7a7a\u7f13\u51b2\u533a\u5373\u53ef\uff01

\u5982\u679c\u7b2c\u4e00\u4e2a\u662f\u8f93\u5165%s \u7b2c\u4e8c\u4e2a\u8f93\u5165\u4e00\u4e2a%c
\u90a3\u4e48\u7531\u4e8e \u56de\u8f66'\u952e'\u5728Windows\u7cfb\u7edf\u4e2d\u7528"\n\r"\u4e24\u4e2a\u5b57\u7b26\u8868\u793a\uff0c\u6240\u4ee5\u7531\u4e8escanf\u8bfb\u5165\u7684\u95ee\u9898\u53ea\u63a5\u53d7\u4e00\u4e2a\u4ee5\u5b57\u7b26\u5c31\u4f1a\u591a\u4f59\u4e00\u4e2a\uff0c\u800c\u8fd9\u4e2a\u591a\u4f59\u7684\u5c31\u4f1a\u88ab\u4e0b\u4e00\u4e2a\u8f93\u5165\u5b57\u7b26\u6240\u63a5\u53d7\uff0c\u6240\u4ee5\u624d\u672a\u8f93\u5165\u5c31\u7ed3\u675f\u4e86\u3002
\u8fd9\u662f\u5728\u4e24\u4e2a\u8f93\u5165\u4e4b\u95f4\u52a0\u5165getchar()\u5373\u53ef\u63a5\u53d7\u8fd9\u4e2a\u591a\u4f59\u7684\u5b57\u7b26\u3002\u6216\u8005\u628a\u8f93\u5165\u5b57\u7b26\u4e32\u6539\u4e3agets\uff08str\uff09\u3002

成绩 char cj[10];
输入字符串 scanf("%s",cj);
字符串转数值 sscanf(cj,"%f",&v)；
程序如下：
#include <stdio.h>
main()
{
char cj[10];
float v;
printf("input cj, if cj=='q' then exit\n");
while(1){
scanf("%s",cj);
if (sscanf(cj,"%f",&v)!=1) break;
if (v>=60)printf("cj is %g, pass\n",v);
else printf("cj is %g, not pass\n",v);
}
printf("good bye\n");
return 0;
}
例子：
input cj, if cj=='q' then exit
12.5
cj is 12.5, not pass
46
cj is 46, not pass
60
cj is 60, pass
86.3
cj is 86.3, pass
q
good bye

#include <stdio.h>
main()
{
int cj;
for(;;)
{
printf("请输入成绩
");
scanf("%d",&cj);
if(cj<0)	//输入负数表示结束 
{
printf("输入完毕
");
break;
}
else if(cj>=60)
printf("成绩为%d，合格",cj);
else if(cj<60)
printf("成绩为%d,不合格",cj);
}
}

C璇█涓鑳藉惁鍚屾椂杈撳叆scanf("%s%c",a,&b);
绛旓細鍙互鐨

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