Thread: Graphics in c++ not working

Hello friends
I am new to c++ and i have installed graphicsin codeblocks
following this tutorial How to include graphics.h in CodeBlocks? | Code with C

but when i try to run this code ..it shows blank screen instead of 3 lines

Code:

#include<graphics.h>using namespace std;






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;


  // initgraph initializes the graphics system
    // by loading a graphics driver from disk


  initgraph(&gd,&gm,"");


  // line for x1, y1, x2, y2
    line(150, 150, 450, 150);


    // line for x1, y1, x2, y2
    line(150, 200, 450, 200);


    // line for x1, y1, x2, y2
    line(150, 250, 450, 250);


    getch();


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

any help will be appreciated..thanks