arc function in C

// C implementation of arc function
#include <graphics.h>

// driver code
int main()
{
    // gm is Graphics mode which is
    // a computer display mode that
    // generates image using pixels.
    // DETECT is a macro defined in
    // "graphics.h" header file
    int gd = DETECT, gm;

    // location of the arc
    int x = 250;
    int y = 250;

    // starting angle and ending angle
    // of the arc
    int start_angle = 155;
    int end_angle = 300;

    // radius of the arc
    int radius = 100;

    // initgraph initializes the graphics system
    // by loading a graphics driver from disk
    initgraph(&gd, &gm, "");

    // arc function
    arc(x, y, start_angle, end_angle, radius);

    getch();

    // closegraph function closes the graphics
    // mode and deallocates all memory allocated
    // by graphics system
    closegraph();

    return 0;
}