1B. Draw a co-ordinate axis at the center of the screen

//(b)Draw a co-ordinate axis at the center of the screen.
//Input:

#include<graphics.h>
#include<stdio.h>
#include<conio.h>
void main()
{
int gd=DETECT,gm;
initgraph(&gd,&gm,"C:\\TurboC3\\BGI");
line(319,0,319,479);
line(0,239,639,239);
getch();
closegraph();
}