Counting the Number of Objects of a Particular Class in a C++ Program

This program demonstrates how to count the number of objects that are created for a class in C++ at runtime. The idea is to have a variable that increments and counts everytime a new object has been created of a particular class. Therefore this program features what is known as the static type of variable of the class. A static variable is one that has only copy of itself no matter how many objects are created for that class. 

Create an Array of Objects in C++

This program shows you how to create an array of objects in C++. The class cl has two variables and two functions to retrieve the values of the two variables. It also has a constructor that is used to initialize the two variables in the parameters when the object is created. See code below:

Illustrate Object Arrays in C++

#include <iostream.h>

#include <conio.h>

class cl {

int h;

int i;

public:

cl(int j, int k) { h=j; i=k; } // constructor with 2 parameters

int get_i() {return i;}

int get_h() {return h;}

};

int main()

{

      clrscr();

      cl ob[3] = {

      cl(1, 2), // initialize

      cl(3, 4),

      cl(5, 6)

};

      int i;

for(i=0; i<3; i++)

 {

      cout << ob[i].get_h();

      cout << ", ";

      cout << ob[i].get_i() << "\n";

 }

getch();

return 0;

}