mystrcmp

#include <stdio.h>

int mystrcmp(const char *str1,const char * str2)
{
	int ret = 0;

	while(1)
	{
		ret = *str1 - *str2;
		if((ret != 0)||(*str1 == ‘\0‘))
		{
			break;
		}
		str1++;
		str2++;
	}
	return ret;
}


int main()
{
	char str1[100] = {‘\0‘};
	char str2[100] = {‘\0‘};

	int ret = 0;

	puts("please intput two string to strcmp,the two string length max = 99");	
	puts("eg: abcdef ABCDEF");

	scanf("%s%s",str1,str2);

	printf("\n");
	ret = mystrcmp(str1,str2);	
	
	if(ret > 0)
	{
		printf("result: %s > %s\n",str1,str2);	
	}
	else if(ret == 0)
	{
		printf("result: %s = %s\n",str1,str2);	
	}
	else
	{
		printf("result: %s < %s\n",str1,str2);	
	}

}