Question

this is a c++ program

Define a class Money with two integer data members, dollars and cents.

1. Member functions: Overload arithmetic operators (+ and -), and return new Money objects;
2. Non-member functions:

• Overload comparison operators (<, >, !=, and ==), and return boolean values;

Write a main function to test your code.

Answer 1

C++ Program:

#include<iostream>
using namespace std;

class Money {
public:
   int dollars, cents;
public:
   Money(int d, int c) {
   dollars = d;
   cents = c;
   }
  
   Money operator + (Money const &obj) {
       Money res(0,0);
       res.dollars = dollars + obj.dollars;
       res.cents = cents + obj.cents;
       if(res.cents>=100){
       res.dollars++;
       res.cents-=100;
       }
       return res;
   }
   Money operator - (Money const &obj) {
       Money res(0,0);
       if(cents<obj.cents){
       res.dollars = dollars - obj.dollars - 1;
       res.cents = cents - obj.cents + 100;
       }
       else{
       res.dollars = dollars - obj.dollars;
       res.cents = cents - obj.cents;
       }
       return res;
   }
   void print() {
   cout << "$"<<dollars << "." << cents << endl;
   }
};

bool operator <(Money const &obj1,Money const &obj2){
   if(obj1.dollars<obj2.dollars || (obj1.dollars==obj2.dollars && obj1.cents<obj2.cents))
   return true;
   else
   return false;
}

bool operator >(Money const &obj1,Money const &obj2){
   if(obj1.dollars>obj2.dollars || (obj1.dollars==obj2.dollars && obj1.cents>obj2.cents))
   return true;
   else
   return false;
}

bool operator !=(Money const &obj1,Money const &obj2){
if(obj1.dollars==obj2.dollars && obj1.cents==obj2.cents)
return false;
else
return true;
}

bool operator ==(Money const &obj1,Money const &obj2){
if(obj1.dollars==obj2.dollars && obj1.cents==obj2.cents)
return true;
else
return false;
}

int main()
{
Money m1(34,50),m2(10,50);
cout<<"Money first object(m1): ";
m1.print();
cout<<"Money second object(m2): ";
m2.print();
Money m3 = m1 + m2;
cout<<"Addition money object(m1+m2)(m3): ";
m3.print();
Money m4 = m3 - m2;
cout<<"Subtraction money object(m3-m2)(m4): ";
m4.print();
cout<<"Is m4<m2?: ";
if(m4<m2)
cout<<"True\n";
else
cout<<"False\n";
cout<<"Is m1>m2?: ";
if(m1>m2)
cout<<"True\n";
else
cout<<"False\n";
cout<<"Is m1!=m2?: ";
if(m1!=m2)
cout<<"True\n";
else
cout<<"False\n";
cout<<"Is m1==m1?: ";
if(m1==m1)
cout<<"True\n";
else
cout<<"False\n";
return 0;
}

Output: