c语言-比较2个字符串（类似strcmp()函数）

//模拟字符串函数strcmp

#define _CRT_SECURE_NO_WARNINGS 1
#include 

int MyStrcmp(const char* s1, const char* s2)
{
	while (*s1 == *s2 && *s1 != '')
	{
		s1++;
		s2++;
	}

	return *s1 - *s2;
}

int main()
{
	char* p1 = "abcd";
	char* p2 = "abco";
	int ret = MyStrcmp(p1, p2);
	if (ret > 0)
	{
		printf("p1 > p2");
	}
	else if (ret < 0)
	{
		printf("p1 < p2");
	}
	else
	{
		printf("p1 = p2");
	}
	return 0;
}