Base-Class Access Control : public inheritance « Class « C++ Tutorial

1. C++ Tutorial
2. Class
3. public inheritance

#include <iostream>
using namespace std;
   
class base {
  int i, j;
public:
  void set(int a, int b) { i=a; j=b; }
  void show() { cout << i << " " << j << "\n"; }
};
   
class derived : public base {
  int k;
public:
  derived(int x) { k=x; }
  void showk() { cout << k << "\n"; }
};
   
int main()
{
  derived ob(3);
   
  ob.set(1, 2); // access member of base
  ob.show(); // access member of base
   
  ob.showk(); // uses member of derived class
   
  return 0;
}