4.8: Types of Inheritance

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Hierarchical Inheritance: In this type of inheritance, more than one sub class is inherited from a single base class. i.e. more than one derived class is created from a single base class.

Classes A and C inherit from class B, while classes B inherits from class F. Class E inherits from both class F and class G.

// C++ program to implement  
// Hierarchical Inheritance 
#include <iostream> 
using namespace std; 
  
// base class 
class Vehicle  
{ 
  public: 
    Vehicle() 
    { 
      cout << "This is a Vehicle" << endl; 
    } 
}; 

// first sub class  
class Car: public Vehicle 
{
    public:
    Car()
    {
      cout << "This is a Car" << endl;
    } 
  
}; 

// second sub class 
class Bus: public Vehicle 
{ 
    public:
    Bus()
    {
      cout << "This is a Bus" << endl;
    } 
      
}; 

// main function 
int main() 
{    
    // creating object of sub class will 
    // invoke the constructor of base class 
    Car obj1; 
    Bus obj2; 

    return 0; 
}

Output - For each of the objects the parent class constructor gets called as well as the child class constructor.

This is a Vehicle
This is a Car
This is a Vehicle
This is a Bus

Contributed by Harsh Agarwal
Geeks for Geeks