#include<iostream>
using namespace std;
class B
{ int a;
public:
int b;
void get_ab();
int get_a();
void show_a(void);
};
class D:private B
{
int c;
public:
void mul(void);
void display(void);
};
void B:: get_ab()
{
cout<<“Enter the value of a\n”;
cin>>a;
cout<<“Enter the value of b\n”;
cin>>b;
}
int B::get_a()
{
return a; void B::show_a(void)
{
cout <<“The value of a= “<<a<<endl;
cout<<“The value of b= “<<b<<endl;
}
void D::mul()
{
get_ab();
get_a();
c=b*get_a();
}
void D::display(void)
{
cout<<“The multiplication result is “<<c<<“\n”;
}
int main()
{
D d;
d.mul();
d.display();
return 0
;}
output:
enter the value of a
20
Enter the value of b
30
The multiplication result is
600