已生成时钟小程序链接：https://download.csdn.net/download/qq_31293403/86513976

#define _stprintf
#define _stprintf_s
#define _CRT_SECURE_NO_WARNINGS

#include<stdio.h>
#include<string.h>
#include<tchar.h>
#include<graphics.h>
#include<conio.h>
#include<math.h>
#define PI 3.14159
#define X(a,b,c) x=a*cos(b*c*PI/180-PI/2)+300
#define Y(a,b,c) y=a*sin(b*c*PI/180-PI/2)+240
#define b(a,b,c) X(a,b,c);Y(a,b,c);

void Draw(int hour, int minute, int second)
{
	double a_hour, a_min, a_sec; // 时、分、秒针的弧度值
	int x_hour, y_hour, x_min, y_min, x_sec, y_sec; // 时、分、秒针的末端位置
	int x4, y4;
	// 计算时、分、秒针的弧度值
	a_sec = second * 2 * PI / 60;
	a_min = minute * 2 * PI / 60 + a_sec / 60; 
	a_hour = hour * 2 * PI / 12 + a_min / 12;
	// 计算时、分、秒针的末端位置
	x_sec = 320 + (int)(120 * sin(a_sec));
	y_sec = 240 - (int)(120 * cos(a_sec));
	x_min = 320 + (int)(100 * sin(a_min));
	y_min = 240 - (int)(100 * cos(a_min));
	x_hour = 320 + (int)(70 * sin(a_hour));
	y_hour = 240 - (int)(70 * cos(a_hour));
	// 画时针
	setlinestyle(SOLID_FILL,2,0,10);
	setcolor(WHITE);
	line(320, 240, x_hour, y_hour);
	// 画分针
	setlinestyle(SOLID_FILL,2,0,6);
	setcolor(LIGHTGRAY);
	line(320, 240, x_min, y_min);
	// 画秒针
	setlinestyle(SOLID_FILL,2,0,2);
	setcolor(RED);
	line(320, 240, x_sec, y_sec);
	/*画十二时辰*/
	TCHAR s1[12];//分配用来保存十二时辰字符的指针数组
	x4 = 175 * sin(0.5 * PI / 180) + 316;
	y4 = 175 * -cos(0.5 * PI / 180) + 230;
	setcolor(LIGHTCYAN);
	_stprintf_s(s1, _T("子"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(30 * PI / 180) + 316;
	y4 = 175 * -cos(30 * PI / 180) + 230;
	_stprintf_s(s1, _T("丑"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(60 * PI / 180) + 316;
	y4 = 175 * -cos(60 * PI / 180) + 230;
	_stprintf_s(s1, _T("寅"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(90 * PI / 180) + 316;
	y4 = 175 * -cos(90 * PI / 180) + 230;
	_stprintf_s(s1, _T("卯"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(120 * PI / 180) + 316;
	y4 = 175 * -cos(120 * PI / 180) + 230;
	_stprintf_s(s1, _T("辰"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(150 * PI / 180) + 316;
	y4 = 175 * -cos(150 * PI / 180) + 230;
	_stprintf_s(s1, _T("巳"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(180 * PI / 180) + 316;
	y4 = 175 * -cos(180 * PI / 180) + 230;
	_stprintf_s(s1, _T("午"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(210 * PI / 180) + 316;
	y4 = 175 * -cos(210 * PI / 180) + 230;
	_stprintf_s(s1, _T("未"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(240 * PI / 180) + 316;
	y4 = 175 * -cos(240 * PI / 180) + 230;
	_stprintf_s(s1, _T("申"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(270 * PI / 180) + 316;
	y4 = 175 * -cos(270 * PI / 180) + 230;
	_stprintf_s(s1, _T("酉"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(300 * PI / 180) + 316;
	y4 = 175 * -cos(300 * PI / 180) + 230;
	_stprintf_s(s1, _T("戌"));
	outtextxy(x4, y4, s1);
	x4 = 175 * sin(330 * PI / 180) + 316;
	y4 = 175 * -cos(330 * PI / 180) + 230;
	_stprintf_s(s1, _T("亥"));
	outtextxy(x4, y4, s1);
	/*绘制八卦字符*/
	TCHAR s2[8];
	x4 = 202 * sin(0.5 * PI / 180) + 316;
	y4 = 202 * -cos(0.5 * PI / 180) + 230;
	_stprintf_s(s2, _T("坎"));
	outtextxy(x4, y4, s2);
	x4 = 202 * sin(45 * PI / 180) + 316;
	y4 = 202 * -cos(45 * PI / 180) + 230;
	_stprintf_s(s2, _T("艮"));
	outtextxy(x4, y4, s2);
	x4 = 202 * sin(90 * PI / 180) + 316;
	y4 = 202 * -cos(90 * PI / 180) + 230;
	_stprintf_s(s2, _T("震"));
	outtextxy(x4, y4, s2);
	x4 = 202 * sin(135 * PI / 180) + 316;
	y4 = 202 * -cos(135 * PI / 180) + 230;
	_stprintf_s(s2, _T("巽"));
	outtextxy(x4, y4, s2);
	x4 = 202 * sin(180 * PI / 180) + 316;
	y4 = 202 * -cos(180 * PI / 180) + 230;
	_stprintf_s(s2, _T("离"));
	outtextxy(x4, y4, s2);
	x4 = 202 * sin(225 * PI / 180) + 316;
	y4 = 202 * -cos(225 * PI / 180) + 230;
	_stprintf_s(s2, _T("坤"));
	outtextxy(x4, y4, s2);
	x4 = 202 * sin(270 * PI / 180) + 316;
	y4 = 202 * -cos(270 * PI / 180) + 230;
	_stprintf_s(s2, _T("兑"));
	outtextxy(x4, y4, s2);
	x4 = 202 * sin(315 * PI / 180) + 316;
	y4 = 202 * -cos(315 * PI / 180) + 230;
	_stprintf_s(s2, _T("乾"));
	outtextxy(x4, y4, s2);
}

int main()
{
	int i, j, k, l, m, x1, x2, y1, y2, x3, y3, x4, y4, x5, y5, x6, y6, x7, y7;
	initgraph(650, 500, 0);
	/*绘制罗盘*/
	setcolor(LIGHTGREEN);
	circle(320, 240, 4);//指针中心点
	circle(320, 240, 160);//数字时钟圆
	circle(320, 240, 190);//十二时辰圆
	circle(320, 240, 220);//八卦圆
	for (i = 0; i < 60; i++) /*绘数字钟刻度*/
	{
		if (i % 5 == 0) {
			l = 15;
		}
		else {
			l = 5;
		}
		x1 = 160 * sin(i * 6 * PI / 180) + 320;
		y1 = 160 * cos(i * 6 * PI / 180) + 240;
		x2 = (160 - l)*sin(i * 6 * PI / 180) + 320;
		y2 = (160 - l)*cos(i * 6 * PI / 180) + 240;
		line(x1, y1, x2, y2);
		
	}
	for (j = 0; j <= 12; j++)/*绘钟表数字*/
	{
		x3 = 136 * sin(j * 30 * PI / 180) + 316;
		y3 = 136 * -cos(j * 30 * PI / 180) + 230;
		setcolor(LIGHTCYAN);
		TCHAR s[12];
		_stprintf(s, _T("%d"), j);
		outtextxy(x3, y3, s);
	}
	for (k = 0; k < 12; k++)/*绘十二时辰刻度*/
	{
		l = 30;
		x4 = 190 * sin(k * 30 * PI / 180+6) + 320;
		y4 = 190 * cos(k * 30 * PI / 180+6) + 240;
		x5 = (190-l) * sin(k * 30 * PI / 180+6) + 320;
		y5 = (190-l) * cos(k * 30 * PI / 180+6) + 240;
		line(x4, y4, x5, y5);
	}
	for (m = 0; m < 9; m++)/*绘制八卦刻度*/
	{
		x6 = 220 * sin(m * 45 * PI / 180-2) + 320;
		y6 = 220 * cos(m * 45 * PI / 180-2) + 240;
		x7 = (220 - l)*sin(m * 45 * PI / 180-2) + 320;
		y7 = (220 - l)*cos(m * 45 * PI / 180-2) + 240;
		line(x6, y6, x7, y7);
	}

	setwritemode(R2_XORPEN); // 设置 XOR 绘图模式
	// 绘制表针
	SYSTEMTIME ti; // 定义变量保存当前时间
	while (!_kbhit())//按任意键退出
	{
		GetLocalTime(&ti);
		Draw(ti.wHour, ti.wMinute, ti.wSecond); // 画表针
		Sleep(1000); // 延时 1 秒
		Draw(ti.wHour, ti.wMinute, ti.wSecond); // 擦表针
	}
	closegraph();
}

此程序默认编译IDE（VS2017）——使用之前请将字符集模式设置为“宽字符字集”，否则会乱码！