What do you need to #include to get this code to work? I took this from the graphics tutorial here at cprogramming.

Code:
#include <fstream.h>
#include <conio.h>
#include <stdlib.h>

void SetMCGA() 
{
   _AX = 0x0013;
   geninterrupt (0x10);
}

void MEMPutpixel (int x, int y, unsigned char Col) 
{
   memset(vga+x+(y*320),Col,1);
}


main()
{
	SetMCGA();
	MEMPutpixel();
	memset(vga, Col, 0xffff);  
	
	return 0;
}