C语言时钟表盘代码

以下是一个简单的 C 语言时钟表盘代码：

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>
#include<dos.h>
#include<time.h>
#define PI 3.14159265

void main()
{
    int gd=DETECT,gm,i;
    int xmid,ymid,sec,min,hr;
    double rsec,rmin,rhr;
    struct tm *ptr;
    time_t lt;

    initgraph(&gd,&gm,"C:\\Turboc3\\BGI");

    xmid=getmaxx()/2;
    ymid=getmaxy()/2;

    settextstyle(0,0,3);
    outtextxy(xmid-75,ymid-150,"ANALOG CLOCK");

    circle(xmid,ymid,100);

    for(i=1;i<=12;i++)
    {
        rsec=(i*(PI/6));
        line(xmid+(90*cos(rsec)),ymid+(90*sin(rsec)),xmid+(100*cos(rsec)),ymid+(100*sin(rsec)));
    }

    while(!kbhit())
    {
        lt=time(NULL);
        ptr=localtime(&lt);

        sec=ptr->tm_sec;
        min=ptr->tm_min;
        hr=ptr->tm_hour;

        rsec=(sec*(PI/30));
        rmin=(min*(PI/30))+(sec*(PI/1800));
        rhr=(hr*(PI/6))+(min*(PI/360))+(sec*(PI/21600));

        line(xmid,ymid,xmid+(80*cos(rhr)),ymid+(80*sin(rhr)));
        line(xmid,ymid,xmid+(90*cos(rmin)),ymid+(90*sin(rmin)));
        line(xmid,ymid,xmid+(95*cos(rsec)),ymid+(95*sin(rsec)));

        delay(1000);
        cleardevice();
    }

    getch();
    closegraph();
}

代码中使用了图形库 graphics.h，需要在编译环境中配置相应的库文件才能正常运行。