c - 在C中实现strcmp函数

Question

我想实现strcmp这就是我尝试过的:

int compare(char *str1, char *str2, int maximumCharactersToCompare)
{
    int i;
    int result = 0;
    for (i = 0; i < maximumCharactersToCompare; i++)
    {
        if (str1[i] > str2[i])
            result = 1;
        else if (str1[i] < str2[i])
            result = -1;
        if (str1[i] == '\0' || str1[i] == '\0')
            break;
    }

    return result;
}

我的用法:

char str1[127];
char str2[127];

printf("Please enter first string: ");
scanf("%s", str1);

printf("Please enter second string: ");
scanf("%s", str2);

int result = compare(str1, str2, 127);

所以我的问题是，如果我尝试比较 "test"和"test "本次返回0我可以看到str2等于 "test"而不是"test "这就是为什么我的结果是 0

Answer 1

您输入

if (str1[i] == '\0' || str1[i] == '\0')

尝试

if (str1[i] == '\0' || str2[i] == '\0')