int update(int& update_x, int& update_y, int update_xspeed, int update_yspeed) 
{ 
	update_x= update_x+update_xspeed; 
	update_y= update_y+update_yspeed; 
}
int show(int show_x, int show_y) 
{ 
	bar(show_x,show_y,10,10); 
	while(!kbhit()) delay(1);

int snake() 
{ 
	int x = 0; int y = 0; int xspeed = 1; int yspeed = 0;
	update(x, y, xspeed, yspeed);
	show(x, y);
}