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C++ Assignment operator overloading

C++ Operator Overloading and Function Overloading

Like other operators, you can overload the assignment operator (=) to create an object, such as a copy constructor.

The following example demonstrates how to overload the assignment operator.

#include <iostream>
using namespace std;
 
class Distance
{
   private:
      int feet;             // 0 to infinity
      int inches;           // 0 to 12
   public:
      // Required constructor
      Distance()
         feet = 0;
         inches = 0;
      }
      Distance(int f, int i){
         feet = f;
         inches = i;
      }
      void operator=(const Distance &D )
      { 
         feet = D.feet;
         inches = D.inches;
      }
      // Display distance method
      void displayDistance()
      {
         cout << "F: " << feet << " I:" << inches << endl;
      }
      
};
int main()
{
   Distance D1(11, 10), D2(5, 11);
 
   cout << "First Distance :"; 
   D1.displayDistance();
   cout << "Second Distance :"; 
   D2.displayDistance();
 
   // Using Assignment Operator
   D1 = D2;
   cout << "First Distance :"; 
   D1.displayDistance();
 
   return 0;
}

When the above code is compiled and executed, it will produce the following results:

First Distance : F: 11 I:10
Second Distance : F: 5 I:11
First Distance : F: 5 I:11

C++ Operator Overloading and Function Overloading