C-比较两个字符串是否相同

int main()
{
    char str1[100];
    char str2[100];

    printf("请输入字符串1：");
    scanf("%s", str1);

    printf("请输入字符串2");
    scanf("%s", str2);

    int i = 0;

    while (str1[i] != '\0' || str2[i] != '\0')
    {
        if (str1[i] != str2[i])
        {
            break;
        }
        i++;
    }


    if (str1[i] == '\0' && str2[i] == '\0')
    {
        printf("字符串相等\n");
    }
    else
    {
        printf("字符串不相等\n");
    }

    return 0;
}