void box(int a, int b, int c, int d)
{
	
	for(int i = a; i < c; i++)
	{
		gotoxy(i,b);	printf("\xcd");
		gotoxy(i,d);	printf("\xcd");
	}
	
	for(int j = b; j < d; j++)
	{
		gotoxy(a,j);	printf("\xba");
		gotoxy(c,j);	printf("\xba");
	}
	
	gotoxy(a,b);	printf("\xc9");
	gotoxy(c,b);	printf("\xbb");
	gotoxy(a,d);	printf("\xc8");
	gotoxy(c,d);	printf("\xbc");
	
}