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Class help please

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jamesfarrow (211)
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//
//  main.cpp
//  exercise 9.6 Rational Class
//
//  Created by James Farrow on 02/09/2016.
//  Copyright © 2016 James Farrow. All rights reserved.
//

#include <iostream>
#include "RationalNumber.hpp"




int main() {
    
    RationalNumber object1; //create RationalNumber object
    RationalNumber object2; //create RationalNumber object
    RationalNumber object3; //create RationalNumber object for addition of first 2
    RationalNumber object4; //create RationalNumber object for subtraction of first 2
    RationalNumber object5; //create RationalNumber object for multiplication of first 2
    RationalNumber object6; //create RationalNumber object for division of first 2
    
    
    object1.setNumerator();
    object1.setDenomenator();
    object1.setGreatestCommonDivisor(object1.getNumerator(), object1.getDenomenator());
    
    std::cout << std::endl;
    
    object2.setNumerator();
    object2.setDenomenator();
    object2.setGreatestCommonDivisor(object2.getNumerator(), object2.getDenomenator());
    
    
    std::cout << "\n\nThe rational number1 as entered: " << object1 << std::endl;// print the rational number as entered
    object1.simplify();//simplify the rational number
    std::cout << "In reduced form: " << object1 << std::endl;// print it in its reduced form
    std::cout << "In decimal form: " << object1.getFloatingPointEquiv() << std::endl;// in decimal form
    
    std::cout << "\n\nThe rational number2 as entered: " << object2 << std::endl;// print the rational number as entered
    object2.simplify();//simplify the rational number
    std::cout << "In reduced form: " << object2 << std::endl;// print it in its reduced form
    std::cout << "In decimal form: " << object2.getFloatingPointEquiv() << std::endl;// in decimal form
    
    
    //addition of rational numbers
    object3 = object1 + object2;
    object3.setGreatestCommonDivisor(object3.getNumerator(), object3.getDenomenator());
    std::cout << "\nAddition of both rational numbers: " << object3 << std::endl;
    object3.simplify();
    std::cout << "Addition in reduced form: " << object3 << std::endl;
    std::cout << "Addition in decimal form: " << object3.getFloatingPointEquiv() << std::endl;// in decimal form
    
    
    //subtraction of rational numbers
    object4 = object1 - object2;
    if (object4.getNumerator() == 0 || object4.getDenomenator() == 0) {
        std::cout << "\n\nSubraction of rational numbers: " << object4 << std::endl;
        std::cout << "Subtraction in decimal form: " << object4.getFloatingPointEquiv() << std::endl;// in decimal form
    }
    else{
    object4.setGreatestCommonDivisor(object4.getNumerator(), object4.getDenomenator());
    std::cout << "\n\nSubraction of rational numbers: " << object4 << std::endl;
    object4.simplify();
    std::cout << "Subtraction in reduced form: " << object4 << std::endl;
    std::cout << "Subtraction in decimal form: " << object4.getFloatingPointEquiv() << std::endl;// in decimal form
    }
    
    
    //multiplication of rational numbers
    object5 = object1 * object2;
    object5.setGreatestCommonDivisor(object5.getNumerator(), object5.getDenomenator());
    std::cout << "\nMultiplication of both rational numbers: " << object5 << std::endl;
    object3.simplify();
    std::cout << "Multiplication in reduced form: " << object5 << std::endl;
    std::cout << "Multiplication in decimal form: " << object5.getFloatingPointEquiv() << std::endl;// in decimal form
    
    
    
    //division of rational numbers
    object6 = object1 / object2;
    object6.setGreatestCommonDivisor(object6.getNumerator(), object6.getDenomenator());
    std::cout << "\nMultiplication of both rational numbers: " << object6 << std::endl;
    object3.simplify();
    std::cout << "Multiplication in reduced form: " << object6 << std::endl;
    std::cout << "Multiplication in decimal form: " << object6.getFloatingPointEquiv() << std::endl;// in decimal form
    
    return 0;
    
    
    }

//
//  RationalNumber.hpp
//  exercise 9.6 Rational Class
//
//  Created by James Farrow on 04/09/2016.
//  Copyright © 2016 James Farrow. All rights reserved.
//

#ifndef RationalNumber_hpp
#define RationalNumber_hpp

#include <iostream>

class RationalNumber{
public:
    RationalNumber();
    void setNumerator();
    void setDenomenator();
    void setGreatestCommonDivisor( int numerator, int denomentor);
    void simplify();
    int getNumerator()const ;
    int getDenomenator()const ;
    double getFloatingPointEquiv();
    int getGreatestCommonDivisor();
    RationalNumber operator+(const RationalNumber &b )const;
    RationalNumber operator-(const RationalNumber &b )const;
    RationalNumber operator*(const RationalNumber &b )const;
    RationalNumber operator/(const RationalNumber &b )const;
private:
    int numerator;
    int denomenator;
    double floatingPointEquivalent = 0;
    int gcd;
};

std::ostream &operator<<( std::ostream& out, RationalNumber  const &rhs );


#endif /* RationalNumber_hpp */
jamesfarrow (211)
Sorry but I have had to put my code across 2 posts. This is what I have come up with so far.
The overloaded */=- seem to work ok.
I know its messy - any ideas on how to tidy it would be welcome!!

Thanks for your help so far...! 

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//
//  RationalNumber.cpp
//  exercise 9.6 Rational Class
//
//  Created by James Farrow on 04/09/2016.
//  Copyright © 2016 James Farrow. All rights reserved.
//

#include "RationalNumber.hpp"
#include <iostream>

RationalNumber::RationalNumber(){
    //setNumerator();
    //setDenomenator();
    //setGreatestCommonDivisor(numerator, denomenator);
}

void RationalNumber::setNumerator(){
    std::cout << "Input your rational number's none zero numerater: ";
    std::cin >> numerator;
    while (! std::cin || numerator == 0) {
        std::cin.clear();
        std::cin.ignore();
        std::cout << "\nInput your rational number's none zero numerater: ";
        std::cin >> numerator;
    }
}

void RationalNumber::setDenomenator(){
    std::cout << "Input your rational number's none zero denomenater: ";
    std::cin >> denomenator;
    while (! std::cin || denomenator == 0) {
        std::cin.clear();
        std::cin.ignore();
        std::cout << "\nInput your rational number's none zero numerater: ";
        std::cin >> denomenator;}
}

void RationalNumber::simplify(){
    numerator /= gcd;
    denomenator /= gcd;
}

int RationalNumber::getNumerator()const {
    return numerator;
}

int RationalNumber::getDenomenator()const {
    return denomenator;
}

int RationalNumber::getGreatestCommonDivisor(){
    return gcd;
}

void RationalNumber::setGreatestCommonDivisor(int a, int b){
    while ( b != 0 ){
        
        int temp1, temp2;
        
        temp1 = b;
        temp2 = a % b;
        a = temp1;
        b = temp2;
        gcd = a;
    }
}

double RationalNumber::getFloatingPointEquiv(){
    if (numerator == 0 && denomenator == 0) {
        floatingPointEquivalent = 0;
        return floatingPointEquivalent;
    }
    floatingPointEquivalent = static_cast<double>(numerator)/denomenator;
    return floatingPointEquivalent;
}

std::ostream &operator<<( std::ostream& out, RationalNumber  const &rhs )
{
    out << rhs.getNumerator() << '/' << rhs.getDenomenator();
    return out;
}

RationalNumber RationalNumber::operator+(const RationalNumber &b )const{
    RationalNumber fraction;
    
    int tempDenom = this->denomenator * b.denomenator;
    int firstTempNum = b.denomenator * this->numerator;
    int secondTempNum = this->denomenator * b.numerator;
    
    fraction.numerator = firstTempNum + secondTempNum;
    fraction.denomenator = tempDenom;
    return fraction;
}

RationalNumber RationalNumber::operator-(const RationalNumber &b )const{
    RationalNumber fraction;
    
    if (this->floatingPointEquivalent == b.floatingPointEquivalent) {
        fraction.numerator = 0;
        fraction.denomenator = 0;
    }
    else{
    int tempDenom = this->denomenator * b.denomenator;
    int firstTempNum = b.denomenator * this->numerator;
    int secondTempNum = this->denomenator * b.numerator;
    
    fraction.numerator = firstTempNum - secondTempNum;
    fraction.denomenator = tempDenom;
    }
    
    return fraction;
}


RationalNumber RationalNumber::operator*(const RationalNumber &b )const{
    RationalNumber fraction;
    
    fraction.numerator = this->numerator * b.numerator;
    fraction.denomenator = this->denomenator * b.denomenator;
    return fraction;
}


RationalNumber RationalNumber::operator/(const RationalNumber &b )const{
    RationalNumber fraction;
    
    fraction.numerator = this->denomenator * b.numerator;
    fraction.denomenator = this->numerator * b.denomenator;
    return fraction;
}
jamesfarrow (211)
Thanks to everyone who took the time to post and help.
I have managed to tidy the code and complete the exercise!!

Cheers

James
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