memcpy

#include <iostream>
#include <stdio.h>
#include <stdlib.h>

using namespace std;
void memcpy(char *dest, char *src ,int size)
{
	char *tmpdest;
	char *tmpsrc;
	tmpdest = dest;
	tmpsrc = src;
while(size-- >0)
{
*tmpdest++ = *tmpsrc++;
}
} 
int main(int argc, char *argv[])
{
	char*dest;
	char src[] = "abcdefgffffffffffffff";
	dest = (char *)malloc(sizeof(src));
 	memcpy(dest, src ,sizeof(src));
	cout<<dest<<endl;
}