CFraction.h

#include <iostream>
using namespace std;

class Cfraction
{
private:
    short up;
    short down;
    short integer;
public:
    Cfraction ()
    {
        setInteger(0);
        setUp (0);
        setDown (1);
    }
    Cfraction (short _up, short _down)
    {
        setInteger(0);
        setUp (_up);
        setDown (_down);
    }
    void setUp (short _up) {up = _up;}
    void setDown (short _down) {down = _down;}
    void setInteger (short _int) {integer = _int;}
    void Print ()
    {
        Check ();
        cout << integer << "   " << up << "/" << down << endl;
    }
    void Check ()
    {
        for (int i = 0; i < 3; i++)
        {
            for (int j = 1000; j > 0; j--)
            {
                if (up % j == 0 && down % j == 0)
                {
                    up /= j;
                    down /= j;
                }
            }
        }
        if (up >= down)
        {
            integer = up/down;
            up%=down;
        }
        if (up == 0)
            down = 1;
    }
    void Convert (Cfraction &fr)
    {
        fr.up += fr.integer * fr.down;
        fr.integer = 0;
    }

    /////////////+\\\\\\\\\\\\\

    Cfraction operator + (Cfraction &fr)
    {
        Convert (fr);
        Cfraction tmp;
        tmp.down = this->down * fr.down;
        tmp.up = (this->down * fr.up) + (this->up * fr.down);
        return tmp;
    }

    Cfraction operator + (int _int)
    {
        Cfraction rgt;
        rgt.integer = _int;
        this->Convert (rgt);
        Cfraction tmp;
        tmp.down = this->down * rgt.down;
        tmp.up = (this->down * rgt.up) + (this->up * rgt.down);
        return tmp;
    }

    friend Cfraction operator + (int _int, Cfraction &fr)
    {
        Cfraction tmp;
        Cfraction lft;
        lft.integer = _int;


        lft.up += lft.integer * lft.down;
        lft.integer = 0;


        tmp.down = lft.down * fr.down;
        tmp.up = (lft.down * fr.up) + (lft.up * fr.down);
        return tmp;
    }

    /////////////*\\\\\\\\\\\\\

    Cfraction operator * (Cfraction &fr)
    {
        Convert (fr);
        Cfraction tmp;
        tmp.up = this->up * fr.up;
        tmp.down = this->down * fr.down;
        return tmp;
    }


    Cfraction operator * (int _int)
    {
        Cfraction tmp;
        Cfraction fr;
        fr.integer = _int;
        Convert (fr);
        tmp.up = this->up * fr.up;
        tmp.down = this->down * fr.down;
        return tmp;
    }

    friend Cfraction operator * (int _int, Cfraction &fr)
    {
        Cfraction tmp;
        Cfraction lft;
        lft.integer = _int;


        lft.up += lft.integer * lft.down;
        lft.integer = 0;

        tmp.up = lft.up * fr.up;
        tmp.down = lft.down * fr.down;
        return tmp;

    }

    //////////////-\\\\\\\\\\\\\\

    Cfraction operator - (Cfraction &fr)
    {
        Convert (fr);
        Cfraction tmp;
        tmp.down = this->down * fr.down;
        tmp.up = (this->down * fr.up) - (this->up * fr.down);
        return tmp;
    }

    Cfraction operator - (int _int)
    {
        Cfraction tmp;
        Cfraction fr;
        fr.integer = _int;
        Convert (fr);

        tmp.down = this->down * fr.down;
        tmp.up = (this->down * fr.up) - (this->up * fr.down);

        return tmp;
    }

    friend Cfraction operator - (int _int, Cfraction &fr)
    {
        Cfraction tmp;
        Cfraction lft;

        lft.integer = _int;
        lft.Convert(lft);

        tmp.down = lft.down * fr.down;
        tmp.up = (lft.down * fr.up) - (lft.up * fr.down);
        return tmp;
    }

    /////////// / \\\\\\\\\\\\\\\\\\\\\\\

    Cfraction operator / (Cfraction &fr)
    {
        Convert (fr);
        Cfraction tmp;
        tmp.up = this->up * fr.down;
        tmp.down = this->down * fr.up;
        return tmp;
    }

    Cfraction operator / (int _int)
    {
        Cfraction tmp;
        Cfraction fr;
        fr.integer = _int;
        Convert (fr);
        tmp.up = this->up * fr.down;
        tmp.down = this->down * fr.up;
        return tmp;
    }

    friend Cfraction operator / (int _int, Cfraction fr)
    {
        Cfraction tmp;
        Cfraction lft;
        lft.integer = _int;
        lft.Convert(lft);
        tmp.up = lft.up * fr.down;
        tmp.down = lft.down * fr.up;
        return tmp;
    }

    Cfraction operator ++ ()
    {
        this->integer++;
        return *this;
    }

    Cfraction operator -- ()
    {
        this->integer--;
        return *this;
    }
};