Question

不用字符串处理函数,写一个程序,求一个字符串的长度并输出

Answer 1

#include "stdio.h"

int getStrLen(char *str)

{

   int len=0;

   while(*str!='\0')

   {

          len++;

          str++;

   }

   return len;

}

int main()

{

      char str[100]={0};

      printf("请输入一个字符串:");

      gets(str);

      printf("该字符串长度为%d\n",getStrLen(str));

 

 

}

Answer 2

/*

len = 10
Press any key to continue

*/

#include <stdio.h>
int mystrlen(char s[]) {
int len = 0;
while(s[len++]);
return len - 1;
}
int main() {
char s[] = "0123456789";
printf("len = %d\n",mystrlen(s));
return 0;
}