Graphics in C Draw Circle

#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>

int main() {
    int gd = DETECT, gm;
    initgraph(&gd, &gm, "");

    int x = 320, y = 240, radius = 100;
    circle(x, y, radius);

    getch();
    closegraph();
    return 0;
}