Question

Hello, im looking for help on adding overload operators to my code. It needs to consist of

• + (addition) for the Fraction class
• * (multiplication), no need not reduce
• == (equality operator)
• = (assignment operator)
• << and >> so in main you can use << and >> as follows:  cin>>frac1; cout<< frac1; where frac1 is a an object of the Fraction class  

the original code is:

#include <iostream>

using namespace std;

class Fractions {
private:
   int numerator;
   int denominator;

public:
   void NumeratorDenominator(int n, int d);

   int getNumerator() const{
       return numerator;
   }

   int getDenominator()const {
       return denominator;
   }

   void print()const;
      
};

int main() {
   Fractions f1;
   Fractions f2;

   cout << " Testing 9/0" << endl;
   f1.NumeratorDenominator(9, 0);
   f1.print();
   cout << "Testing 9/2" << endl;
   f2.NumeratorDenominator(9, 2);
   f2.print();
   cout << " Testing -9/4" << endl;
   f1.NumeratorDenominator(-9, 4);
   f1.print();
   cout << " Testing 10/2" << endl;
   f1.NumeratorDenominator(10, 2);
   f1.print();
   cout << " Testing 3/4" << endl;
   f1.NumeratorDenominator(3, 4);
   f1.print();

   system("pause");
}

void Fractions::NumeratorDenominator(int n, int d) {

   if (d <= 0 || n < 0) {
       numerator = 0;
       denominator = 1;
   }
   else {
       numerator = n;
       denominator = d;
   }
}

void Fractions:: print()const {
   if (numerator<denominator)
       cout << numerator<< "/" << denominator << endl;
   else {
       cout << numerator / denominator << " " << numerator % denominator << "/" << denominator << endl;
   }
}

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
_________________

#include <iostream>

using namespace std;

class Fraction {
private:
int numerator;
int denominator;

public:
void NumeratorDenominator(int n, int d);

int getNumerator() const{
return numerator;
}

int getDenominator()const {
return denominator;
}

void setNumerator(int numer)
{
    this->numerator=numer;
}
int setDenominator(int denom)
{
this->denominator=denom;
}

void print()const;
Fraction operator+(const Fraction& f) const; // operator+()
Fraction operator*(const Fraction& f) const; // operator*()
bool operator==(const Fraction& f) const; // operator==()
Fraction& operator=(const Fraction & src);
/**
* Friend function declarations
* Output fraction number to an output stream, Example 3+4i
*/
friend std::ostream& operator<<(std::ostream& dout, const Fraction&);
/**
* read fraction number to an input stream
*/
friend std::istream& operator>>(std::istream& din, Fraction&);
};
void Fraction::NumeratorDenominator(int n, int d) {

if (d <= 0 || n < 0) {
numerator = 0;
denominator = 1;
}
else {
numerator = n;
denominator = d;
}

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

Fraction Fraction::operator+(const Fraction& f) const
{
Fraction frac;
int a = numerator;
int b = denominator;
int c = f.numerator;
int d = f.denominator;
int sumnumer = (a * d + b * c);
int denom = (b * d);
frac.setNumerator(sumnumer);
frac.setDenominator(denom);
return frac;
}

Fraction Fraction::operator*(const Fraction& f) const
{
Fraction frac;
int a = this->numerator;
int b = this->denominator;
int c = f.numerator;
int d = f.denominator;
int mulnumer = (a * c);
int muldenom = (b * d);
frac.setNumerator(mulnumer);
frac.setDenominator(muldenom);
return frac;
}
// Function implementation which display Fraction numbers by using the operator overloading '<<'
ostream& operator<<(ostream& dout, const Fraction& c)
{
dout << c.numerator << "/" << c.denominator;
return dout;
}
// Function implementation which read Fraction numbers by using the operator overloading '>>'
istream& operator>>(istream& din, Fraction& c)
{
char ch;
din >> c.numerator;
din >> ch;
din >> c.denominator;
return din;
}

bool Fraction::operator==(const Fraction& f) const
{
int a = this->numerator;
int b = this->denominator;
int c = f.numerator;
int d = f.denominator;
double n1 = a * d;
double d1 = b * d;
double n2 = c * b;
double d2 = d * b;

if ((n1 == n2) && (d1 == d2))
return true;
else
return false;
}

void Fraction:: print()const {
if (numerator<denominator)
cout << numerator<< "/" << denominator << endl;
else {
cout << numerator / denominator << " " << numerator % denominator << "/" << denominator << endl;
}
}

int main() {
Fraction f1;
Fraction f2;

cout << " Testing 9/0" << endl;
f1.NumeratorDenominator(9, 0);
f1.print();
cout << "Testing 9/2" << endl;
f2.NumeratorDenominator(9, 2);
f2.print();
cout << " Testing -9/4" << endl;
f1.NumeratorDenominator(-9, 4);
f1.print();
cout << " Testing 10/2" << endl;
f1.NumeratorDenominator(10, 2);
f1.print();
cout << " Testing 3/4" << endl;
f1.NumeratorDenominator(3, 4);
f1.print();
Fraction f3=f1+f2;
cout<<f1<<" + "<<f2<<" = "<<f3<<endl;
Fraction f4=f1*f2;
cout<<f1<<" * "<<f2<<" = "<<f4<<endl;
if(f3==f4)
{
    cout<<f3<<" is equal to "<<f4<<endl;
}
else
{
    cout<<f3<<" is not equal to "<<f4<<endl;
}
Fraction f5=f3;
cout<<"After Assignment :"<<f5<<endl;
Fraction f6;
cout<<"Enter Fraction:";
cin>>f6;
cout<<"You Entered Fraction :"<<f6<<endl;

system("pause");
}

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Output:

_______________Could you plz rate me well.Thank You