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;
	}
}