clock.cpp

C++时尚编程百例 很不错的C++实例 绝对经典

#include<stdio.h>
#include<dos.h>
#include<conio.h>
#include<math.h>
#include<complex.h>
#include<graphics.h>
#define PI  3.14159

int main(void)
{
   int X=300,Y=250,R=100,RR=130;
   int X_HOUR,X_MINUTE,X_SECOND;
   int Y_HOUR,Y_MINUTE,Y_SECOND;
   int X_DRAW=0,Y_DRAW=0,R_DRAW=120;
   int NUM=0;
   struct  time T;
   int driver=DETECT,mode;

   registerbgidriver(EGAVGA_driver);
   initgraph(&driver,&mode,"");

   setlinestyle(0,1,3);
   setcolor(LIGHTGRAY);
   circle(X,Y,RR);
   setlinestyle(0,1,1);
   for(NUM=0;NUM<12;NUM++)
   {
	setcolor(11);
	X_DRAW=X+R_DRAW*cos(NUM*2*PI/12);
	Y_DRAW=Y+R_DRAW*sin(NUM*2*PI/12);
	circle(X_DRAW,Y_DRAW,5);
	setfillstyle(1,11);
	if((NUM%3)==0)
		{
			floodfill(X_DRAW,Y_DRAW,11);
		}
   }

   while(!kbhit())
   {
		gettime(&T);
		X_HOUR=X+(R/2)*cos(T.ti_hour*2*PI/12+T.ti_min*2*PI/(60*12)-PI/2);
		Y_HOUR=Y+(R/2)*sin(T.ti_hour*2*PI/12+T.ti_min*2*PI/(60*12)-PI/2);
		X_MINUTE=X+R*cos(T.ti_min*2*PI/60-PI/2)*3/4;
		Y_MINUTE=Y+R*sin(T.ti_min*2*PI/60-PI/2)*3/4;
		X_SECOND=X+R*cos(T.ti_sec*2*PI/60-PI/2);
		Y_SECOND=Y+R*sin(T.ti_sec*2*PI/60-PI/2);

		setcolor(YELLOW);
		line(X,Y,X_HOUR,Y_HOUR);
		setcolor(RED);
		line(X,Y,X_MINUTE,Y_MINUTE);
		setcolor(BLUE);
		line(X,Y,X_SECOND,Y_SECOND);
		delay(50);
		setcolor(BLACK);
		line(X,Y,X_HOUR,Y_HOUR);
		line(X,Y,X_MINUTE,Y_MINUTE);
		line(X,Y,X_SECOND,Y_SECOND);


   }

   getch();
   closegraph();
   return 0;
}