Question

Write a Fraction class. An example of a fraction is 1/2. Note that C/C++ will convert it to 0.5, but for this problem, it should still be displayed as 1/2. You should have at least the following two private member variables: numerator (top part), and denominator (bottom part). Overload the following operators: ==, +, << and >>. Also, implement the default constructor and a second constructor that takes two arguments for the numerator and the denominator. Make sure the denominator is not 0. You do not have to worry about displaying the fraction to its lowest terms. For example, it is okay to display 4/8. However, when comparing 1/2 with 4/8, these two fractions are equal. Use the following main() function for initial testing. int main() {Fraction one, two;//You need to check for denominator being 0, else you will lose points cout << "The input format should be: NN NN\n"; cout << "Enter the first fraction; \n"; cin >> one; cout << "Enter the second fraction; \n"; cin >>two; cout<< "Testing ==; The two fractions << (one == two ? "are": "are not") <<" equal\n"; cout<< "Testing +;"<< one <<" +" <<two << " =" << one + two << end!; return 0;}

Answer 1

Fraction.h

#include <iostream>
using namespace std;

class Fraction
{
private:
int numerator;
int denominator;
public:
Fraction();
Fraction(int, int);
Fraction operator+(const Fraction&);
Fraction operator-(const Fraction&);
Fraction operator*(const Fraction&);
Fraction operator/(const Fraction&);
bool operator==(const Fraction& rhs);
friend ostream &operator<<( ostream &output, const Fraction & );
friend istream &operator>>( istream &input, Fraction & );
};

Fraction.cpp

#include "Fraction.h"
#include <iostream>
#include <stdlib.h>
using namespace std;

Fraction::Fraction() { this->denominator = 1; this->numerator = 0;}

Fraction::Fraction(int num, int denom)
{
this->numerator = num;
this->denominator = denom;
}
bool Fraction::operator==(const Fraction& rhs)
{
return (this->numerator == rhs.numerator) && (this->denominator == rhs.denominator);
}
Fraction Fraction::operator+(const Fraction& c)
{
Fraction r = Fraction();
r.numerator = (this->numerator*c.denominator + this->denominator*c.numerator);
r.denominator = (this->denominator * c.denominator);
return r;
}

Fraction Fraction::operator-(const Fraction& c)
{
Fraction r = Fraction();
r.numerator = (this->numerator*c.denominator - this->denominator*c.numerator);
r.denominator = (this->denominator * c.denominator);
return r;
}

Fraction Fraction::operator*(const Fraction& c)
{
Fraction r = Fraction();
r.numerator = (this->numerator*c.numerator);
r.denominator = (this->denominator * c.denominator);
return r;
}

Fraction Fraction::operator/(const Fraction& c)
{
Fraction r = Fraction();
r.numerator = (this->numerator*c.denominator);
r.denominator = (this->denominator * c.numerator);
return r;
}

ostream &operator<<( ostream &output, const Fraction &F )
{
output << F.numerator <<"/"<<F.denominator ;
return output;
}

istream &operator>>( istream &input, Fraction &F ) {
input >> F.numerator >> F.denominator;
if (F.denominator == 0)
{
cout << "Denominator cannot be zero. Try again." << endl;
exit(1);
}
return input;
}

main.cpp

#include "Fraction.h"
#include <iostream>

using namespace std;

void displayResult(const string &, const Fraction &, const Fraction&, const Fraction&);

int main() {
Fraction one, two, result;
int choice;

cout << "The input format should be: NN NN\n";
cout << "Enter the first fraction: \n";
cin >> one;
cout << "Enter the second fraction: \n";
cin >> two;

cout << "Testing ==: The two fractions "\
<< (one == two ? "are" : "are not") << " equal\n";
cout << "Testing +: " << one << " + " << two << " = " << one + two << endl;
cout << "Testing -: " << one << " - " << two << " = " << one - two << endl;
cout << "Testing *: " << one << " * " << two << " = " << one * two << endl;
cout << "Testing /: " << one << " / " << two << " = " << one / two << endl;

return 0;
}

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