Assignment Operator Overloading Example in C++

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This code defines a class Distance which represents a distance in feet and inches. It has two private data members feet and inches, and two constructors: a default constructor that sets both feet and inches to zero, and a parameterized constructor that takes two integer arguments for feet and inches. It also defines an overloaded assignment operator = that copies the values of the feet and inches data members from one Distance object to another.

In main(), two Distance objects D1 and D2 are created using the parameterized constructor. Their values are displayed using the displayDistance() method. Then, D1 is assigned the value of D2 using the = operator, and the new value of D1 is displayed using displayDistance() again. Overall, this code demonstrates how to overload the assignment operator in a class and use it to copy objects of the same class.

Source Code

#include<iostream>
using namespace std;
class Distance
{
   private:
     int feet;
     int inches;
   public:
      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;
      }
      void displayDistance()
      {
        cout<<"F: "<<feet<<" I:"<<inches<<endl;
      }
};
int main()
{
   Distance D1(11,10),D2(5,11);
   cout<<"\nFirst Distance : ";
   D1.displayDistance();
   cout<<"\nSecond Distance :";
   D2.displayDistance();
   D1=D2;
   cout<<"\nFirst Distance :";
   D1.displayDistance();
   return 0;
}

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Output

First Distance : F: 11 I:10

Second Distance :F: 5 I:11

First Distance :F: 5 I:11

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