c语言代码练习40

问：实现两个字符串的比较

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <assert.h>
#include <string.h>

int main()
{
    char* p1 = "abcdefg";
    char* p2 = "abcder";
    int ret = strcmp(p1,p2);
    if (ret == 0)
    {
        printf("相等");
    }
    else if (ret > 0)
        printf("arr1大");
    else
        printf("arr2大");
    return 0;
}

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <assert.h>
#include <string.h>

int my_strcmp(char* x, char* y)
{
    assert(x && y);
    while (*x == *y)
    {
        if (*x == '\0')
            return 0;//相等
        x++;
        y++;
    }
    return(*x - *y);

}

int main()
{
    char* p1 = "abcdefg";
    char* p2 = "abcder";
    int ret = my_strcmp(p1, p2);
    if (ret == 0)
    {
        printf("相等");
    }
    else if (ret > 0)
        printf("arr1大");
    else
        printf("arr2大");
    return 0;
}