CHERAUS

/********************************************************
*  code.cheraus.com
*
*   Draws a line using the inbuilt line function
*  
*
********************************************************/
#include<iostream.h>
#include<conio.h>
#include<graphics.h>
int main()
{
  int gd=DETECT;
  int gm;
  clrscr();    //clears the screen in TurboC(available in conio.h header file)

  int x1,y1,x2,y2;  //variables to hold the co-ordinates

  //taking the line co-ordinates from user
  cout<<"Enter the x co-ordinate of point 1: ";
  cin>>x1;
  cout<<"Enter the y co-ordinate of point 1: ";
  cin>>y1;
  cout<<"Enter the x co-ordinate of point 2: ";
  cin>>x2;
  cout<<"Enter the y co-ordinate of point 2: ";
  cin>>y2;

 /*
    initialization of graphics mode. The third argument takes the path
    of the graphics driver in your computer. If you have it in some other
    directory then specify the appropriate path;otherwise it may not work.
  */
  initgraph(&gd,&gm,"C:\\turboc3\\bgi");

 // clears the screen in graphics mode
  cleardevice();

  //line function to draw line from (x1,y1) to (x2,y2)
  line(x1,y1,x2,y2);

  //gets a character from the user before exiting the program
  getch();

  //closes the graphics mode
  closegraph();

  //return from main function. Indicates successful run
  return 0;
}