#include"graphics.h"
#define WinColor WHITE

main()
{
	clrscr();
	textcolor(WinColor);
	gotoxy(30,10);
	cprintf("Welcome");
#undef WinColor;           /*取消宏定義WinColor*/
#define WinColor YELLOW  /*重新定義宏WinColor*/
	textcolor(WinColor);
	gotoxy(30,12);
	cprintf("Welcome");
	getch();
}