this is a simple ping-pong game made in C++ on Dev c++ IDE .

1. #include<iostream>
usingnamespace std;
#include <stdlib.h>
#include<time.h>
#include<conio.h>
#include<windows.h>
#include<iomanip>
enumDir{
stop=0,Left,upleft,downleft,Right,upright,downright
};
classball
{
private :
intx,y;
intorig_x,orig_y;
Dir direction;
public:
ball(intposx,intposy)
{
orig_x=posx ;
orig_y=posy;
x=posx ;
y=posy;

2. direction=stop;
}
voidreset()
{
x=orig_x ;
y=orig_y;
direction=stop;
}
voidchange_direction(Dird)
{
direction=d;
}
voidrandom_direction()
{
direction=(Dir)((rand()%6)+1) ;
}
intget_x()
{
returnx ;
}
intget_y()
{
returny ;
}
Dir get_direction()

3. {
returndirection;
}
voidmove()
{
switch(direction)
{
case stop: break;
case Left: x-- ; break;
case Right: x++ ; break;
case upleft: x--,y-- ;break;
case downleft: x--,y++; break;
case upright: x++,y-- ; break;
case downright:x++,y++ ; break;
default: break;
}
}
} ;
classpaddle
{
private :
int x,y;
intorig_x,orig_y;
public:

4. paddle(intposx,intposy)
{
orig_x=posx ;
orig_y=posy ;
x=posx ;
y=posy;
}
voidreset()
{
x=orig_x ;
y=orig_y;
}
intget_x()
{
returnx ;
}
intget_y()
{
returny ;
}
voidmove_up()
{
y-- ;
}
voidmove_down()

5. {
y++ ;
}
} ;
classgame_maneger
{
private :
intwidth,height;
intscore1,score2;
char up1,down1,up2,down2;
bool quit;
ball *Ball ;
paddle *player1;
paddle *player2;
public:
game_maneger(intw,inth)
{
srand(time(NULL)) ;
quit=false ;
up1='a' ;
down1='z' ;
up2='k' ;
down2='m' ;
score1=score2=0 ;

6. width=w ;
height=h;
Ball=new ball(w/2,h/2) ;
player1=new paddle(1,h/2-3) ;
player2=new paddle(w-3,h/2-3) ;
}
~game_maneger()
{
delete Ball,player1,player2;
}
voidscore_up(paddle*player)
{
if(player==player1)
score1++ ;
else if(player==player2)
score2++ ;
Ball->reset() ;
player1->reset() ;
player->reset() ;
}
voiddraw()
{
inti,j;
intballx,bally;

7. intplayer1x,player1y,player2x,player2y;
ballx=Ball->get_x() ;
bally=Ball->get_y() ;
player1x=player1->get_x() ;
player1y=player1->get_y() ;
player2x=player2->get_x() ;
player2y=player2->get_y() ;
system("cls");
for(i=0;i<width+1;i++)
cout<<"xB2" ;
cout<<endl ;
for(i=0;i<height;i++)
{
for(j=0;j<width;j++)
{
if(j==0||j==width-1)
cout<<"xB2" ;
if(ballx==j&&bally==i)
cout<<"O" ;
else if(player1x==j&&player1y==i)

8. cout<<"xDB";
else if(player2x==j&&player2y==i)
cout<<"xDB";
else if(player1x==j&&player1y+1==i)
cout<<"xDB";
else if(player1x==j&&player1y+2==i)
cout<<"xDB";
else if(player1x==j&&player1y+3==i)
cout<<"xDB";
else if(player2x==j&&player2y+1==i)
cout<<"xDB";
else if(player2x==j&&player2y+2==i)
cout<<"xDB";
else if(player2x==j&&player2y+3==i)
cout<<"xDB";
else
cout<<" " ;
}
cout<<endl ;
}
for(i=0;i<width+1;i++)

9. cout<<"xB2" ;
cout<<endl ;
cout<<"n Player1st score = "<<score1 ;
cout<<"n Player2ndscore = "<<score2 ;
}
voidinput()
{
Ball->move() ;
inti,j;
intballx,bally;
intplayer1x,player1y,player2x,player2y;
char current ;
ballx=Ball->get_x() ;
bally=Ball->get_y() ;
player1x=player1->get_x() ;
player1y=player1->get_y() ;
player2x=player2->get_x() ;
player2y=player2->get_y() ;
if(kbhit())
{

10. current=getch() ;
if(current==up1)
{
if(player1y>0)
player1->move_up() ;
}
if(current==up2)
{
if(player2y>0)
player2->move_up() ;
}
if(current==down1)
{
if(player1y+4<height)
player1->move_down() ;
}
if(current==down2)
{
if(player2y+4<height)
player2->move_down() ;
}
if(Ball->get_direction()==stop)
Ball->random_direction() ;

11. if(current=='q')
quit=true ;
}
}
voidlogic()
{
inti,j;
intballx,bally;
intplayer1x,player1y,player2x,player2y;
char current ;
ballx=Ball->get_x() ;
bally=Ball->get_y() ;
player1x=player1->get_x() ;
player1y=player1->get_y() ;
player2x=player2->get_x() ;
player2y=player2->get_y() ;
for(i=0;i<4;i++)
{
if(ballx==player1x+1)
if(bally==player1y+i)
Ball->change_direction((Dir)((rand()%3)+4)) ;

12. }
for(i=0;i<4;i++)
{
if(ballx==player2x-2)
if(bally==player2y+i)
Ball->change_direction((Dir)((rand()%3)+1)) ;
}
if(bally==height-1)
Ball->change_direction(Ball->get_direction()==downright?upright:upleft) ;
if(bally==0)
Ball->change_direction(Ball->get_direction()==upright?downright:downleft) ;
if(ballx==width-2)
score_up(player1) ;
if(ballx==0)
score_up(player2) ;
}
voidrun()
{
while(!quit)

13. {
draw() ;
input() ;
logic() ;
Sleep(80) ;
}
}
} ;
intmain()
{
cout<<"nnn...................KEYBOARDINSTRUCTIONS................................";
cout<<endl<<endl<<setw(30)<<"KEYBOARDKEYS"<<setw(30)<<"OPERATION";
cout<<"n-----------------------------------------------------------------------";
cout<<endl<<setw(25)<<"a"<<setw(40)<<"leftpadduppwardmovement";
cout<<endl<<setw(25)<<"z"<<setw(40)<<"leftpadddownwardmovement";
cout<<endl<<setw(25)<<"k"<<setw(40)<<"rightpadduppwardmovement";
cout<<endl<<setw(25)<<"m"<<setw(40)<<"rightpadddownwardmovement";
cout<<endl<<setw(25)<<"x"<<setw(40)<<"quite/exitgame";
cout<<"n-----------------------------------------------------------------------";
cout<<"nnn # all keysshouldbe inlowercase onlyn ( as game workson ASCIIvalues)";
cout<<"nnpressENTER to start the game " ;
getch() ;
system("cls");

14. game_manegerc(40,20) ;
c.run() ;
return0 ;
}