Write a c++ program to show the use of constructor.

// Cpp program to illustrate the 
// concept of Constructors 
#include <iostream> 
using namespace std; 
  
class counter{
    public: 
    int count,num;
    counter()     //constructor with same class name
    {
        count=0;    //initialize count value 0 
    }
    void getdata()  //function to input number to increement
    {
       cout<<"Enter a number to add \n";
       cin>>num;
    }
    void increment()
    {
        count=count+num;
    }
    void display()
    {
        cout<<"incremented numbers id "<<count;
    }
};
int main(){
    counter c1;
    c1.getdata();
    c1.increment();
    c1.display();
    return 1;
}

output: