# include<iostream.h>
# include<conio.h>
class number
{
public:
int a,b;
void getdata()
	{
	  cout<<"enter the value of a";
	  cin>>a;
	  cout<<"enter the value of b";
	  cin>>b;
	}
};
class addition : public number
{
public:
int sum;
void display();
{
sum=a+b;
cout<<"the value of sum is="<<sum<<endl;
}
};
class subtraction : public number
{
public:
int sub;
void show();
{
sub=a-b;
cout<<"the value of sub is="<<sub<<endl;
}
};
class multiplication : public number
{
public:
int mul;
void replay();
{
mul=a*b;
cout<<"the value of mul is="<<mul<<endl;
}
};
void main()
{
clrscr();
number n;
addition a;
subtraction s;
multiplication m;
n.getdata();
a.display();
s.show();
m.replay();
getch();
}