Relational Operator Distance Example using Operator Overloading in C++

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The code defines a Distance class that represents a distance measurement in feet and inches. It overloads the - operator to create a negative value of a Distance object, and the < operator to compare two Distance objects. It also provides a displayDistance() method to print the value of a Distance object.

In the main() function, two Distance objects D1 and D2 are created and compared using the < operator. If D1 is less than D2, a message is printed indicating that D1 is less than D2; otherwise, a message is printed indicating that D2 is less than D1.

The code is a good example of operator overloading and class member functions. It demonstrates how operator overloading can be used to provide intuitive and concise syntax for complex operations, and how class member functions can be used to encapsulate data and behavior within a single object.

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 displayDistance()
    {
       cout<<"F: "<<feet<<" I:"<<inches<<endl;
    }
    Distance operator- ()
    {
       feet = -feet;
       inches = -inches;
       return Distance(feet, inches);
    }
    bool operator<(const Distance& d)
    {
       if(feet<d.feet)
       {
         return true;
       }
       if(feet==d.feet && inches<d.inches)
       {
         return true;
       }
       return false;
    }
};
int main()
{
   Distance D1(11,10),D2(5,11);
   if(D1<D2)
   {
     cout<<"D1 is less than D2"<<endl;
   }
   else
   {
     cout<<"D2 is less than D1"<<endl;
   }
   return 0;
}

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Output

D2 is less than D1

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