C语言如何判断输入一串字符里是否有不是数字的字符 C语言如何判断输入的字符串是否有汉字?
C\u8bed\u8a00\u600e\u4e48\u5224\u65ad\u6211\u8f93\u5165\u76845\u4e2a\u5b57\u7b26\u4e2d\u542b\u6709\u975e\u6570\u5b57\u5b57\u7b26\uff1f\u4f60\u7684\u610f\u601d\u662f\u4f60\u8981\u8fde\u7740\u8f93\u51655\u4e2a\u5b57\u7b26\uff0c\u6ca1\u6709\u7a7a\u683c\u4e5f\u6ca1\u6709\u6362\u884c\uff1f\u90a3\u4f60\u7684\u8f93\u5165\u65b9\u6cd5\u7528\u9519\u4e86\uff0c\u56e0\u4e3a%d\u7684\u8303\u56f4\u53ef\u4ee5\u5305\u62ecint\u7c7b\u578b\u7684\u53d6\u4e4b\u8303\u56f4\u7684\uff0c\u6240\u4ee5\u4e0d\u7ba1\u4f60\u8f93\u5165\u591a\u5c11\u4f4d\uff0c\u7cfb\u7edf\u6c38\u8fdc\u8ba4\u4e3a\u4f60\u8f93\u5165\u7684\u662f\u4e00\u4e2aint\uff0c\u4f60\u53ef\u4ee5\u7528gets()\u5440\uff0c\u5148\u83b7\u5f97\u8fde\u7eed\u7684\u5b57\u7b26\u4e32\uff0c\u4f60\u5c31\u53ef\u4ee5\u7528a[i]'9'\u6765\u5224\u65ad\u4e86\uff0c\u5f53\u7136a[i]\u7684\u7c7b\u578b\u662fchar\u7c7b\u578b\u7684\uff0c\u5982\u679c\u4e0d\u786e\u5b9a\u662f\u51e0\u4f4d\uff0c\u4f60\u53ef\u4ee5\u5b9a\u4e49char a[100]\uff0c\u5230\u65f6\u5019\u7528strlen\u83b7\u5f97\u957f\u5ea6\uff0ca[strlen(a)] = '\0'\u5c31\u597d\u5566 \uff0c\u968f\u4fbf\u5199\u4e2a\u7a0b\u5e8f\u7ed9\u4f60\u770b\u770b\u5427
#include
#include
int main()
{
char a[100];
int n = 0;
gets(a);
for(int i = 0; i < strlen(a); i++)
{
if(a[i] '9')
{
n++;
}
else
printf("%c", a[i]);
}
printf("\n%d\n", n);
getchar();
return 0;
}
\u8fd9\u662f\u8ddf\u6c49\u5b57\u7684\u5b58\u50a8\u65b9\u5f0f\u6709\u5173\uff0c\u897f\u6587\u5b57\u7b26\u7528ASCII\u7801\u7684\u8bdd\uff0c\u4e00\u4e2a\u5b57\u8282\u53ef\u4ee5\u8868\u793a\u4e00\u4e2a\u5b57\u7b26\uff0c\u800c\u6c49\u5b57\u7528\u7684\u662f\u53cc\u5b57\u8282\u8868\u793a\u4e00\u4e2a\u6c49\u5b57\u3002
\u90a3\u4e48\uff0c\u4e3a\u4e86\u5728\u673a\u5668\u5185\u90e8\u533a\u5206ASCII\u7801\u548c\u6c49\u5b57\u673a\u5185\u7801\uff0c\u5c31\u89c4\u5b9a\u6c49\u5b57\u7684\u4e24\u4e2a\u5b57\u8282\u7684\u6700\u9ad8\u4e3a\u90fd\u4e3a1.
\u4f8b\u5982\uff1a\u6c49\u5b57\u201c\u554a\u201d\u7684\u6c49\u5b57\u673a\u5185\u7801\u4e3aB0A1H
\u8868\u793a\u6210\u53cc\u5b57\u8282\u662f\u8fd9\u6837\u768410110000 10100001
\u672c\u7a0b\u5e8f\u7528\u7684\u5c31\u662f\u5224\u65ad\u6700\u9ad8\u4f4d\u7684\u65b9\u6cd5\u3002
int is_zh_ch(char p)
{
if(~(p >> 8) == 0) \u5c06p\u5b57\u8282\u8fdb\u884c\u79fb\u4f4d\u8fd0\u7b97\uff0c\u53f3\u79fb8\u4f4d\uff0c\u8fd9\u6837\uff0c\u5982\u679c\u79fb\u4f4d\u540e\u662f0\uff0c\u5219\u8bf4\u660e\u539f\u6765\u7684\u5b57\u8282\u6700\u9ad8\u4f4d\u4e3a0\uff0c\u4e0d\u662f1\u90a3\u4e48\u4e5f\u5c31\u4e0d\u662f\u6c49\u5b57\u7684\u4e00\u4e2a\u5b57\u8282\u3002
{
return 0; //\u4ee3\u8868\u4e0d\u662f\u6c49\u5b57
}
return -1;
}
#include <stdio.h>
#include <string.h>
void main()
{
int i,n,k=0;
char str[1000];
gets(str);
n=strlen(str);
for(i=0;i<n;i++)
if(str[i]<'0'||str[i]>'9') k=1;
if(k==1) printf("输入的字符串中包含非数字的字符。");
else printf("输入的字符串中不包含非数字的字符。");
}
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