c语言代码解决问题

解题思路:

注意事项:

参考代码:

#include<stdio.h>

#include<string.h>

int main()

{

    char str1[101], str2[101];

    scanf("%s%s", str1, str2);

    int i;

    if (strcmp(str1, str2) == 0)

        printf("0");

    else

    {

        i = 0;

        while (str1[i] == str2[i])

        {

            i++;

        }

        printf("%d", str1[i] - str2[i]);

    }

    return 0;

}