C++画圆

使用C++技术在控制台输出一个圆形。

完整代码

# define PAI 3.1415926
# define B 0.809
# include "graphics.h"
#include "math.h"
int main()
{int i,j,k,x0,y0,x,y,driver,mode;float a;driver=CGA;mode=CGAC0;initgraph(&driver,&mode,"");setcolor(3);setbkcolor(GREEN);x0=150;y0=100;circle(x0,y0,10);circle(x0,y0,20);circle(x0,y0,50);for(i=0;i<16;i++){a=(2*PAI/16)*i;x=ceil(x0+48*cos(a));y=ceil(y0+48*sin(a)*B);setcolor(2); line(x0,y0,x,y);}setcolor(3);circle(x0,y0,60);/* Make 0 time normal size letters */settextstyle(DEFAULT_FONT,HORIZ_DIR,0);outtextxy(10,170,"press a key");getch();setfillstyle(HATCH_FILL,YELLOW);floodfill(202,100,WHITE);getch();for(k=0;k<=500;k++){setcolor(3);for(i=0;i<=16;i++){a=(2*PAI/16)*i+(2*PAI/180)*k;x=ceil(x0+48*cos(a));y=ceil(y0+48+sin(a)*B);setcolor(2); line(x0,y0,x,y);}for(j=1;j<=50;j++){a=(2*PAI/16)*i+(2*PAI/180)*k-1;x=ceil(x0+48*cos(a));y=ceil(y0+48*sin(a)*B);line(x0,y0,x,y);}}restorecrtmode();
}