shizhong.c

行编辑器,

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

//屏幕中心的坐标（640X480模式下） 
#define mid_x 320 
#define mid_y 240 


int main() 
{ int graphdriver=DETECT,graphmode; 
int end_x,end_y; 
struct time curtime; 
float th_hour,th_min,th_sec; 

initgraph(&graphdriver,&graphmode,"C:\\TC2"); //初始化VGA屏幕模式 
setbkcolor(BLACK); //使用黑色的背景色 
while(!kbhit(0)) //若有键盘输入，则跳出，即是结束程序 
{ setcolor(GREEN); //把画笔设为绿色 
circle(mid_x,mid_y,180); //钟的外圆 
circle(mid_x,mid_y,150); //钟的内圆 
circle(mid_x,mid_y,1); //画出钟的圆心 
gettime(&curtime); //取得系统当前时间 
th_sec=(float)curtime.ti_sec*0.1047197551; //把秒针的角度化为弧度，为以后绘制时方便，下同 
th_min=(float)curtime.ti_min*0.1047197551+th_sec/60.0; //分针的弧度 
th_hour=(float)curtime.ti_hour*0.5235987755+th_min/12.0; //时度的弧度，注意整时是12等分的，所时乘的是3.14/180*5 
//计算出时针的尾的坐标（时针长70） 
end_x=mid_x+70*sin(th_hour); 
end_y=mid_y-70*cos(th_hour); 
setcolor(RED); 
line(mid_x,mid_y,end_x,end_y); //用红色线画出时针 
//计算出分针坐标(分针长110） 
end_x=mid_x+110*sin(th_min); 
end_y=mid_y-110*cos(th_min); 
setcolor(RED); 
line(mid_x,mid_y,end_x,end_y); //用红色画出分针 
end_x=mid_x+140*sin(th_sec); 
end_y=mid_y-140*cos(th_sec); 
setcolor(RED); 
line(mid_x,mid_y,end_x,end_y); //同上，画出秒针，长为140 
//画出钟盘上的刻度，刻度长20 
line(140,240,160,240); //9点对应的大刻度 
line(320,60,320,80); //12点对应的大刻度 
line(500,240,480,240); //3点的刻度 
line(320,420,320,400); //6点的刻度 
line(410,395.7,400,378.4); //5点 
line(475.7,330,458.4,320); //4点 
line(475.7,150,458.4,160); //2点 
line(410,84.3,400,101.6); //1点 
line(230,84.3,240,101.6); //11点 
line(164.3,150,181.6,160); //10点 
line(164.3,330,181.6,320); //8点 
line(230,395.7,240,378.4); //7点 
sleep(BLUE); //这里应该是打错，停止一秒，应为sleep(1000) 
cleardevice(); //清除屏幕上的显示 
} 
closegraph(); //关闭VGA屏幕，即返回文本方式 
return 0; 
}