C语言电子时钟设计

#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_h