【c语言】不用库函数实现strcmp

// 不用库函数实现strcmp

#include <stdio.h>
#include <assert.h>

int my_strcmp( char const *p,char const *q )
{
	assert( ( *p != NULL ) && ( *q != NULL ) );
	while( *p == *q )
	{
		if( *p == '\0')
		{
			return 0;
		}
		p++;
		q++;
	}
		
		if( *p > *q )
		{
			return 1;
		}
		else
		{
			return -1;
		}

}


int main()
{
	char *p = "aebh";
	char *q = "addfg";
	printf("%d\n",my_strcmp( p,q ));

	return 0;
}

<img src="http://img.blog.csdn.net/20150330230907026?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhhb3lhcWlhbjU1Mg==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

原文：http://blog.csdn.net/zhaoyaqian552/article/details/44759965