c语言提取字符串中的所有数字和字母

Question

如题所述

Answer 1

代码示例：
#includestdio.h
#includestring.h
#include "ctype.h"
int main()
{
char str[100] = "", s[100] = "";
int i = 0, j = 0;
gets_s(str,sizeof(str));
while (str[i] != '\0')
{
if (isdigit(str[i])) {
s[j]=str[i];
j++;
}
i++;
}
puts(s);
return 0;
}