1INHSINP.CPP

//single inheritance.)
#include<conio.h>
#include<iostream.h>
class whole
{
private:
int a,b;
public:
void setdata()
{
cout<<"enter two integral numbere";
cin>>a>>b;
}
int geta()
{return(a);}
int getb()
{return(b);}
void add()
{
cout<<"addition is="<<a+b;
}
};
class integer:public whole
{
private:
int p,q;
public:
void setdata()
{
p=geta();
q=getb();
}
void sub()
{
cout<<"\nsubtraction is="<<p-q;
}
};
void main()
{
clrscr();
integer I;
I.whole::setdata();
I.add();
I.integer::setdata();
I.sub();
getch();
}
      //whole as a parent class,base class
	   //integer is the baby class ,derived class
       //ek object apni hi class ke private members ko access
	//nhi kar sakta.