SINGLE INHERITANCE

SOURCE CODE:
#include<iostream.h>
#include<conio.h>
class base
{
  int a;
  public:
    int b;
    void get_ab();
    int get_a();
    void show();
};
void base::get_ab()
{
  cout<<"\n Enter the value for a and b:\n";
  cin>>a>>b;
}
int base::get_a()
{
 return a;
}
void base::show()
{
  cout<<"\n\nThe entered values are:\t"<<a<<"\t "<<b;
}
class derived:public base
{
  int add;
  public:
    void cal();
    void display();
};
void derived::cal()
{
  get_ab();
  add=get_a()+b;
}
void derived::display()
{
  show();
  cout<<"\n\n  Addition="<<add;
}
void main()
{
 derived D;
 D.cal();
 D.display();
 getch();
}

OUTPUT:
   
 Enter the value for a and b:
20
30

The entered values are:  20   30

Addition=50
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