Overloads assignment operator (=) - C++ Class

C++ examples for Class:Operator Overload

  1. HOME
  2. C++
  3. Class
  4. Operator Overload

Description

Overloads assignment operator (=)

Demo Code

#include <iostream>
using namespace std;
class alpha//w  w w .j  a  va  2  s .co m
{
   private:
       int data;
   public:
   alpha()                      //no-arg constructor
   { }
   alpha(int d)                 //one-arg constructor
   { data = d; }
   void display()               //display data
   { cout << data; }
   alpha operator = (alpha& a)  //overloaded = operator
   {
      data = a.data;            //not done automatically
      cout << "\nAssignment operator invoked";
      return alpha(data);       //return copy of this alpha
   }
};
int main()
{
   alpha a1(37);
   alpha a2;
   a2 = a1;                        //invoke overloaded =
   cout << "\na2="; a2.display();  //display a2
   alpha a3 = a2;                  //does NOT invoke =
   cout << "\na3="; a3.display();  //display a3
   cout << endl;
   return 0;
}

Result


Related Tutorials