Constructor and destructor in multilevel inheritance in C++

Write a C++ Program to illustrates the use of Constructors in multilevel inheritance. Here’s a Simple Program to illustrates the use of Constructors in multilevel inheritance in C++ Programming Language.

What are Constructors in C++?

A class constructor is a special member function of a class that is executed whenever we create new objects of that class.

The Compiler calls the Constructor whenever an object is created. Constructors iitialize values to object members after storage is allocated to the object.

class A
{
int x;
public:
A[]; //Constructor
};

While defining a contructor you must remeber that the name of constructor will be same as the name of the class, and contructors never have return type.

Constructors can be defined either inside the class definition or outside class definition using class name and scope resolution :: operator.

Below is the source code for C++ Program to illustrates the use of Constructors in multilevel inheritance which is successfully compiled and run on Windows System to produce desired output as shown below :

SOURCE CODE : :

/* C++ Program to illustrates the use of Constructors in multilevel inheritance  */

#include
using namespace std;

class A
{
        protected:
                int x ;
        public:
                A[ ]  // Constructor without argument
                {
                     x = 0 ;
                     cout