2nd SEMESTER HW4 NUM 1

#include <iostream>
#include <cmath>
#include <stdlib.h>
#include <unistd.h>
using namespace std;

class Fraction{
    int numer, denom;
    int find_gcd(int a, int b){
        return a==0?b:find_gcd(b%a, a);
    }
    public:
        void setNum(int num){
            numer = num;
        }
        void setDen(int num){
            denom = num;
        }
        int getNum(){
            return numer;
        }
        int getDen(){
            return denom;
        }
        Fraction operator +(const Fraction& fr){
            Fraction f;
            if(this->denom!=fr.denom){
                f.setDen(this->denom*fr.denom);
                f.setNum(this->numer*fr.denom + this->denom*fr.numer);
            }else{
                f.setDen(this->denom);
                f.setNum(this->numer+fr.numer);
            }
            f.reduce_fraction();
            return f;
        }
        Fraction operator -(const Fraction& fr){
            Fraction f;
            if(this->denom!=fr.denom){
                f.setDen(this->denom*fr.denom);
                f.setNum(this->numer*fr.denom - this->denom*fr.numer);
            }else{
                f.setDen(this->denom);
                f.setNum(this->numer-fr.numer);
            }
            f.reduce_fraction();
            return f;
        }
        Fraction operator *(const Fraction& fr){
            Fraction f;
            f.setNum(this->numer*fr.numer);
            f.setDen(this->denom*fr.denom);
            f.reduce_fraction();
            return f;
        }
        Fraction operator /(const Fraction& fr){
            Fraction f;
            f.setNum(this->numer*fr.denom);
            f.setDen(this->denom*fr.numer);
            f.reduce_fraction();
            return f;
        }
        Fraction operator %(const Fraction& fr){
            Fraction f;
            if(this->denom!=fr.denom){
                f.setDen(this->denom*fr.denom);
                f.setNum(this->numer*fr.denom % this->denom*fr.numer);
            }else{
                f.setDen(this->denom);
                f.setNum(this->numer%fr.numer);
            }
            f.reduce_fraction();
            return f;
        }
        void power(int power){
            this->numer = pow(this->numer,power);
            this->denom = pow(this->denom,power);
            this->reduce_fraction();
        }
        void reduce_fraction(){
            int gcd = find_gcd(numer, denom);
            this->numer/=gcd;
            this->denom/=gcd;
        }
        void print_fraction(){
            if(numer==denom){
                cout << numer << endl;
            }else{
                cout << numer << "/" << denom << endl;
            }
        }
};

void printMenu(){
    system("cls");
    cout << "1. Addition (+)" << endl;
    cout << "2. Substraction (-)" << endl;
    cout << "3. Multiplication (*)" << endl;
    cout << "4. Division (/)" << endl;
    cout << "5. Modulo (%)" << endl;
    cout << "6. Fraction to the power n" << endl;
    cout << "7. Exit" << endl;
    cout << "Enter the operation: " << endl;
}

void getFraction(Fraction& first, Fraction& second){
    int temp;
    cout << "Enter first fraction numerator and denominator" << endl;
    cin >> temp; first.setNum(temp);
    cin >> temp; first.setDen(temp);
    cout << "Enter the second fraction numerator and denominator" << endl;
    cin >> temp; second.setNum(temp);
    cin >> temp; second.setDen(temp);
}

int main(){
    Fraction first, second, result;
    int input, temp, p;
    do{
        printMenu();
        cin >> input;
        switch(input){
            case 1:
                getFraction(first, second);
                result = first+second;
                break;
            case 2:
                getFraction(first, second);
                result = first-second;
                break;
            case 3:
                getFraction(first, second);
                result = first*second;
                break;
            case 4:
                getFraction(first, second);
                result = first/second;
                break;
            case 5:
                getFraction(first, second);
                result = first%second;
                break;
            case 6:
                cout << "Enter fraction numerator and denominator" << endl;
                cin >> temp; result.setNum(temp);
                cin >> temp; result.setDen(temp);
                cout << "Enter the power (integer): ";
                cin >> p;
                result.power(p);
                break;
            case 7:
                cout << "Exiting...";
                exit(0);
                break;
            default:
                cout << "Only 1 - 6 allowed! Restarting..." << endl;
                sleep(1);
                continue;
        }
        cout << "Result : ";
        result.print_fraction();
        cout << endl;
        system("pause");
    }while(true);
    return 0;
}