Question

C语言编辑一个程序。要求在屏幕上显示一个图形时钟（用程序绘制一个与时钟样式相似即可），时间与系统时间

Answer 1

#include<stdio.h>
#include<dos.h>
#include<conio.h>
#include<math.h>
#include<graphics.h>
#define PI 3.1415926

int main()
{
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 gdriver=DETECT,gmode;
initgraph(&gdriver,&gmode,"D:\\Program Files\\TC\\BGI");
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);
X_MINUTE=X+R*cos(T.ti_min*2*PI/60-PI/2)*3/4;
X_SECOND=X+R*cos(T.ti_sec*2*PI/60-PI/2);
Y_HOUR=X+(R/2)*sin(T.ti_hour*2*PI/12+T.ti_min*2*PI/(60*12)-PI/2);
Y_MINUTE=Y+R*sin(T.ti_min*2*PI/60-PI/2)*3/4;
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(10000);
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;
}

在使用时请把initgraph中的第三个参数改成你的tc下BGI文件夹所在的目录，注意：目录中不要有空格，\要用\\代替。

Answer 2

http://zhidao.baidu.com/question/121241211.html