Answer to Question #210919 in C++ for Jawad

Question

Write a C++ Program to illustrate default constructor, parameterized constructor and copy constructors.

Answer 1

#include <iostream>
using namespace std;
class Constructors{
    int value;
    public:
    Constructors():value(0){
        cout<<"Default constructor called...";
    }
    Constructors(int val):value(val){
        cout<<"Parameterized constructor called...";
    }
    Constructors(const Constructors &temp){
        cout<<"Copy constructor called...";
        this->value = temp.value;
    }
    void printValue(){
        cout<<value<<endl;
    }
};
int main(){
    Constructors constructor;
    constructor.printValue();
    constructor = Constructors(2);
    constructor.printValue();
    Constructors constructor3(constructor);
    constructor3.printValue();
    return 0;
}