This document provides code examples for basic graphic programming in C++ using graphics libraries. It includes examples of how to plot a single point, draw a line, and make a rectangle. The code snippets show how to initialize graphics mode, call graphics functions like putpixel, line, and rectangle, and close the graphics window. Links are also provided to download necessary header files for graphics programming in Dev C++.

1. Basic Graphic Programming in C++
Link Dev C++ : https://sourceforge.net/projects/orwelldevcpp/
Link of Graphics header files
https://www.dropbox.com/s/kjk46f5lh5uxn28/Graphics%20in%20Dev%20C++.rar?dl=0

3. A code plot point in C++
#include <stdio.h>
#include <conio.h>
#include <graphics.h>
void main()
{
int x=40,y=50,h=10;
int gdriver = DETECT, gmode, errorcode;
initgraph(&gdriver, &gmode, "c:tcbgi");
putpixel(x,y,h);
getch();
}

5. // C++ Implementation for drawing
line
#include <graphics.h>
int main()
{
// gm is Graphics mode which is a computer display
// mode that generates images 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 the disk
initgraph(&gd, &gm, "c:tcbgi");
// line for x1, y1, x2, y2
line(150, 150, 450, 150);
getch();
// close graph function closes the graphics
// mode and deallocates all memory allocated
// by graphics system.
closegraph();
}

6. Rectangle Function
The rectangle function is used to draw a rectangle between two points on the screen. Its syntax is:
rectangle (x1, y1, x2, y2);
For example, to draw a rectangle between the upper left comer & bottom right corner of the screen (for VGA
monitor), the statement is written as:
rectangle(0, 0, 639, 479);
or
rectangle (639, 479,0, 0);
Point (0, 0) represents the upper left corner of the screen, and point (639, 479) represents the bottom right comer
of the screen.

7. make a rectangle in c++ using the
rectangle function in graphics mode
#include<graphics.h>
#include<conio.h>
main()
{
int d,m;
d= detect;
initgraph(&d, &m, "c:tcbgi”);
rectangle(100,300,500,200);
getch();
closegraph();
}