Draw shapes using graphics

This program shows how to draw different shapes using graphics.First the graphics is initialized.Then the generic functions are used to draw different shapes.

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

void main()
{
    /* initialization of graphics */
    InitGraphics();
   
    outtextxy(200, 10, "* Draw Shapes using Graphics *");
   
    /* draw circle */
    // DrawShape(1);
   
    /* draw arc */
    DrawShape(2);
   
    /* draw rectangle */
    DrawShape(3);
   
    /* draw pie slice */
    DrawShape(4);
   
    outtextxy(200, 400, "* Press any key to exit *");
   
    /* clean up */
    getch();
    closegraph();
    }
   
    /* This function initialize graphics */
    InitGraphics()
    {
    /* request auto detection */
    int gdriver = DETECT, gmode, errorcode;
   
    /* initialize graphics and local variables */
    initgraph(&gdriver, &gmode, "");
   
    /* read result of initialization */
    errorcode = graphresult();
   
    /* an error occurred */
    if (errorcode != grOk)
    {
    printf("Graphics error: %s\n", grapherrormsg(errorcode));
    printf("Press any key to halt:");
    getch();
    exit(1);/* terminate with an error code */
    }
    }
   
    /* This is generic function which draws different shapes */
    DrawShape(int shape)
    {
    switch(shape)
    {
    case 1:
    /* draw the circle */
    outtextxy(75, 40, "Circle");
    circle(100, 100, 50);
    break;
   
    case 2:
    /* draw arc */
    outtextxy(235, 40, "Arc");
    arc(250, 100, 0, 180, 50);
    break;
   
    case 3:
    /* draw a rectangle */
    outtextxy(350, 40, "Rectangle");
    rectangle(350,50,450,150);
    break;
   
    case 4:
    /* set fill style and draw a pie slice */
    outtextxy(100, 190, "Pie Slice");
    setfillstyle(EMPTY_FILL, getmaxcolor());
    pieslice(100, 250, 0, 0, 50);
    break;
    }
}