參數
:x,y為圓心坐標,RADIUS為半徑
案例
#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
int main(void)
{
int gdriver = DETECT, gmode, errorcode;
int midx, midy;
int radius = 100;
initgraph(&gdriver, &gmode, );
errorcode = graphresult();
if (errorcode != grOk)
{
printf("Graphics error: %s
", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1);
}
midx = getmaxx() / 2;
midy = getmaxy() / 2;
setcolor(getmaxcolor());
circle(midx, midy, radius);
getch();
closegraph();
return 0;
}
