dollarToRupee created by kgashok - https://repl.it/I0Qr/0

dollarToRupee.cpp

#include <iostream>
using namespace std;

class RupeeAmount {
  float valueInRupees;

 public:
  RupeeAmount() { valueInRupees = 0; }
  RupeeAmount(float val) { valueInRupees = val; }

  operator float() { return valueInRupees / 70; }

  void display() { cout << "Rupee value: " << valueInRupees << endl; }
};

class DollarAmount {
  float valueInDollars;

 public:
  DollarAmount() { valueInDollars = 0; }
  DollarAmount(float value) { valueInDollars = value; }

  operator RupeeAmount() { return valueInDollars * 70.0; }

  void display() { cout << "Dollar value: " << valueInDollars << endl; }
};

int main() {
  DollarAmount d(100);
  RupeeAmount r;

  r = d;  // calls operator DollarAmount function
  r.display();

  float dollarEquiv;
  dollarEquiv = r;  // calls operator float function
  cout << "Dollar Value : " << dollarEquiv << endl;

  return 0;
}