Circle

#include<cstdlib>
#include<iostream>
#include<winbgim.h>
#include<iomanip>
using namespace std;
int main()
{
    int gdriver=9;
    int gmode=2;
    initgraph(&gdriver,&gmode,"");
    setbkcolor(MAGENTA);
    setcolor(YELLOW);
    cleardevice();
    for (int y=0;y<=480;y+=20)
    {
        for (int x=0;x<=720;x+=20)
        {
            circle(x,y,20);
        }
    }
    getch();
    closegraph();
    return 0;
}