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39-single-inheritance-private.cpp
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39-single-inheritance-private.cpp
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#include <iostream>
using namespace std;
class base
{
int data1; // Private by default and is not inheritable.
public:
int data2;
void set_data();
int get_data1();
int get_data2();
};
void base::set_data()
{
data1 = 10;
data2 = 20;
}
int base::get_data1()
{
return data1;
}
int base::get_data2()
{
return data2;
}
class derived : private base // Class "base" is being derived publically.
{
int data3;
public:
void process();
void display();
};
void derived::process()
{
set_data();
data3 = data2 * get_data1();
}
void derived::display()
{
cout << "Value of data 1 is " << get_data1() << "\n"; // "data1" is called from function "get_data1()" because "data1" is private member of "base" class and we can't access private members of "base" class from any other class like "derived" class.
cout << "Value of data 2 is " << data2 << "\n";
cout << "Value of data 3 is " << data3 << "\n";
}
int main()
{
derived der;
// der.set_data();
der.process();
der.display();
return 0;
}