Add value to Base Class Constructor Using Member Initializer List in C++ Programming

The C++ program demonstrates the use of inheritance and constructor chaining to initialize data members of a derived class.

The program starts by including the necessary header files and defining a base class Base. The class Base has a private data member x and a constructor that takes an integer parameter a. The constructor initializes the value of x with the parameter a and also prints the value of x to the console.

A derived class Child is then defined, which publicly inherits from the base class Base. The derived class Child has a private data member y and a constructor that takes two integer parameters a and b. The constructor of the derived class Child initializes the value of y with the parameter b and also calls the constructor of the base class Base with the parameter a using the constructor chaining technique. The constructor of the derived class Child also prints the value of y to the console.

In the main() function, an object o of the derived class Child is created with two integer values of 25 and 50 passed as arguments to its constructor. The program then ends by returning 0 from the main() function, indicating that the program ran successfully.

Source Code

// Add value to Base Class Constructor
#include<iostream>
using namespace std;
class Base
{
private:
    int x;
public:
    Base(int a):x(a)
    {
        cout<<"The Value of Base X :"<<x<<endl;
    }
};
 
class Child : public Base
{
private:
    int y;
public:
    Child(int a,int b):Base(a),y(b)
    {
        cout<<"The Value of Child Y :"<<y<<endl;
    }
};
int main()
{
    Child o(25,50);
    return 0;
}

Output

The Value of Base X :25
The Value of Child Y :50

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