C++:For an assignment, we are supposed to take the finished code and create an overloaded constructor that takes as an argument a string. The string will contain a fraction, which needs to be parsed. My professor said that the string can be as simple as "1 2", with the space between the two, with the numbers being the numerator and the denominator respectively. Here is the code it needs to be built upon:

fraction.h

#ifndef FRACTION

#define FRACTION

class Fraction

{

private:

int num;

int den;

public:

void setFraction(int n, int d);

Fraction add(const Fraction &f);

Fraction sub(const Fraction &f);

Fraction mult(const Fraction &f);

Fraction div(const Fraction &f);

void printFraction();

//Constructors

Fraction();

Fraction(int num, int den);

Fraction(int num, int den, string frac);

};

#endif

fraction.cpp

#include

#include "fraction.h"

using namespace std;

Fraction::Fraction()

{

this->setFraction(1, 1);

}

Fraction::Fraction(int num, int den)

{

this->setFraction(num, den);

}

Fraction::Fraction(int num, int den, string frac)

{

this->setFraction(num, den);

}

void Fraction::setFraction(int n, int d)

{

this->num = n;

this->den = d;

}

Fraction Fraction::add(const Fraction &f)

{

Fraction tmp;

tmp.num = (this->num * f.den) + (f.num * this->den);

tmp.den = f.den * this->den;

return tmp;

}

Fraction Fraction::sub(const Fraction &f)

{

Fraction tmp;

tmp.num = (this->num * f.den) - (f.num * den);

tmp.den = f.den * this->den;

return tmp;

}

Fraction Fraction::mult(const Fraction &f)

{

Fraction tmp;

tmp.num = this->num * f.num;

tmp.den = this->den * f.den;

return tmp;

}

Fraction Fraction::div(const Fraction &f)

{

Fraction tmp;

tmp.num = this->num *f.den;

tmp.den = this->den * f.num;

if (tmp.den < 0)

{

tmp.num *= -1;

tmp.den *= -1;

}

return tmp;

}

void Fraction::printFraction()

{

cout << this->num << "/" << this->den << endl;

}

main.cpp

#include

#include "fraction.h"

using namespace std;

int main()

{

Fraction f1(1, 4), f2(1, 2), f3, f4, f5, f6;

f3 = f1.add(f2);

f4 = f1.sub(f2);

f5 = f1.mult(f2);

f6 = f1.div(f2);

f3.printFraction();

f4.printFraction();

f5.printFraction();

f6.printFraction();

return 0;

}