【c语言】不用库函数实现memcpy

标签：memcpy

//不用库函数实现memcpy

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

void * my_memcpy ( void *dst, void const *src, int count )
{
	void * ret = dst;
	assert( ( dst != NULL ) && ( src != NULL ));
	while( count-- )
	{
		*( ( char * )dst ) =  *( ( char * )src );
		( ( char * )dst )++;
		( ( char * )src )++;
	}
	*( ( char * )dst ) = '\0';
	return ret;
	

}


int main()
{
	char dst[] = "shiqinianchan";
	char *src = "dandanwa";
	my_memcpy( dst, src, 8);
	printf("内存拷贝后的结果是：%s\n",dst);
	
	return 0;
}

【c语言】不用库函数实现memcpy

标签：memcpy

原文地址：http://blog.csdn.net/zhaoyaqian552/article/details/44752229