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//driver.cpp
#include "Fraction.h"
#include <iostream>
#include <cassert>
using namespace std;
int main()
{
bool chosen = false; //while ctrlStruct bvarInit
while(!chosen)
{
cout << "Choose a function:" << endl
<< "1:Convert a Fraction to a decimal value" << endl
<< "2:Convert an integer to a Fraction value" << endl
<< "3:Add two Fractions together" << endl
<< "4:Quit" << endl
<< "Enter a choice: ";
int choice; //switch ctrlStruct ivarDecl
int fint; //intToFract ivarDecl
Fraction fract, //dependent FvarDecl
fract2; //addFract FvarDecl
cin >> choice;
switch(choice)
{
case 1:
cin >> fract; //dependent FvarInit
cout << fract.fractToDeci() << endl;
chosen = true; //while ctrlStruct bvarMutn
break;
case 2:
cout << "Enter an integer: ";
cin >> fint; //intToFract ivarInit
fract = Fraction(fint);
cout << fract;
chosen = true; //while ctrlStruct bvarMutn
break;
case 3:
cout << "First fraction:" << endl;
cin >> fract;
cout << "Second fraction:" << endl;
cin >> fract2;
cout << (fract + fract2);
chosen = true; //while ctrlStruct bvarMutn
break;
case 4:
chosen = true;
break;
}
}
return 0;
}
//Fraction.h
#include <iostream>
using namespace std;
class Fraction
{
private:
int num;
int den;
void reduce();
public:
void print(ostream& os = cout); //Prints a Fraction in form num / den
void read(istream& is = cin); //Sets a Fraction to inputed values
Fraction();
Fraction(int num);
Fraction(int num, int den);
Fraction(const Fraction& fract);
double fractToDeci(); //Converts a Fraction to a double
void addFract(Fraction fract); //Adds two fractions
friend ostream& operator<<(ostream& os, const Fraction& f);
friend istream& operator>>(istream& is, Fraction& f);
friend Fraction operator+(const Fraction& f1, const Fraction& f2);
};
//the class definition file: Fraction.cpp
#include "Fraction.h"
#include <iostream>
#include <cassert>
using namespace std;
void Fraction::reduce()
{
int tempBig, tempSml, tempMod;
if (num > den)
{
tempBig = num,
tempSml = den;
do
tempMod = tempBig % tempSml,
tempBig = tempSml,
tempSml = tempMod;
while ( tempBig % tempSml != 0);
num /= tempMod,
den /= tempMod;
}
else if (num < den)
{
tempBig = den,
tempSml = num;
do
tempMod = tempBig % tempSml,
tempBig = tempSml,
tempSml = tempMod;
while ( tempBig % tempSml != 0);
den /= tempMod,
num /= tempMod;
}
else if (num == den)
num = 1,
den = 1;
}
void Fraction::print(ostream& os)
{
os << num << "/" << den << endl;
}
void Fraction::read(istream& is)
{
cout << "Enter the numerator: ";
is >> num;
cout << "Enter the denominator: ";
is >> den;
assert(den != 0);
reduce();
}
Fraction::Fraction()
{
num = 0,
den = 1;
}
Fraction::Fraction(int n)
{
num = n;
den = 1;
}
Fraction::Fraction(int n, int d)
{
num = n,
den = d;
assert(den != 0);
}
Fraction::Fraction(const Fraction& fract)
{
num = fract.num,
den = fract.den;
}
double Fraction::fractToDeci()
{
double dfract = num / static_cast <double> (den);
return dfract;
}
void Fraction::addFract(Fraction fract)
{
num = num * fract.den + den * fract.num;
den = den * fract.den;
reduce();
}
ostream& operator<<(ostream& os, Fraction& f)
{
f.print(os);
return os;
}
istream& operator>>(istream& is, Fraction& f)
{
f.read(is);
return is;
}
Fraction operator+(const Fraction& f1, const Fraction& f2)
{
Fraction fsum;
fsum.addFract(f1);
fsum.addFract(f2);
return fsum;
}
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