#include <iostream>

using namespace std;

int aRe, aIm, bRe, bIm;

int additionRe(int aRe, int bRe)
{
    return (aRe + bRe);

}

int additionIm(int aIm, int bIm)
{
    return (aIm + bIm);

}

int substractionRe(int aRe, int bRe)
{
    return (aRe - bRe);

}

int substractionIm(int aIm, int bIm)
{
    return (aIm - bIm);

}

int multiplication1(int aRe, int aIm, int bRe, int bIm)
{
    return ((aRe * bRe) - (aIm * bIm));

}

int multiplication2(int aRe, int aIm, int bRe, int bIm)
{
    return ((aIm * bRe) + (aRe * bIm));

}

int division1(int aRe, int aIm, int bRe, int bIm)
{
    return (((aRe * bRe) + (aIm * bIm)) / ((bRe * bRe) + (bIm * bIm)));

}

int division2(int aRe, int aIm, int bRe, int bIm)
{
    return (((aIm * bRe) - (aRe * bIm)) / ((bRe * bRe) + (bIm * bIm)));
}

int main()
{
    int operation = 0;

    do
    {
       cout << "***************************************\n";
       cout << "**  COMPLEX NUMBERS TOOL MENU        **\n";
       cout << "**                                   **\n";
       cout << "** 1.  Addition                      **\n";
       cout << "** 2.  Substraction                  **\n";
       cout << "** 3.  Multiplication                **\n";
       cout << "** 4.  Division                      **\n";
       cout << "**                                   **\n";
       cout << "** 5.  Exit                          **\n";
       cout << "***************************************\n";
       cout << "Choose operation from the menu: ";
       cin >> operation;
       cout << endl;



       switch(operation)
       {
           case 1: cout << "a(Real part) = "; cin >> aRe;
                   cout << "a(Imaginery part) = "; cin >> aIm;
                   cout << "b(Real part) = "; cin >> bRe;
                   cout << "b(Imaginary part) = "; cin >> bIm;
                   system("CLS");
                   cout << "(" << aRe << "+(" << aIm << "i)) + (" << bRe << "+(" << bIm << "i) = " << additionRe(aRe, bRe) << " + (" << additionIm(aIm, bIm) << "i)" << endl; break;
           case 2: cout << "a(Real part) = "; cin >> aRe;
                   cout << "a(Imaginery part) = "; cin >> aIm;
                   cout << "b(Real part) = "; cin >> bRe;
                   cout << "b(Imaginary part) = "; cin >> bIm;
                   system("CLS");
                   cout << "(" << aRe << "+(" << aIm << "i)) - (" << bRe << "+(" << bIm << "i) = " << substractionRe(aRe, bRe) << " + (" << substractionIm(aIm, bIm) << "i)" << endl; break;;
           case 3: cout << "a(Real part) = "; cin >> aRe;
                   cout << "a(Imaginery part) = "; cin >> aIm;
                   cout << "b(Real part) = "; cin >> bRe;
                   cout << "b(Imaginary part) = "; cin >> bIm;
                   system("CLS");
                   cout << "(" << aRe << "+(" << aIm << "i)) * (" << bRe << "+(" << bIm << "i) = " << multiplication1(aRe, aIm, bRe, bIm) << " + (" << multiplication2(aRe, aIm, bRe, bIm) << "i)" << endl; break;;;
           case 4:cout << "a(Real part) = "; cin >> aRe;
                   cout << "a(Imaginery part) = "; cin >> aIm;
                   cout << "b(Real part) = "; cin >> bRe;
                   cout << "b(Imaginary part) = "; cin >> bIm;
                   system("CLS");
                   cout << "(" << aRe << "+(" << aIm << "i)) / (" << bRe << "+(" << bIm << "i) = " << division1(aRe, aIm, bRe, bIm) << " + (" << division2(aRe, aIm, bRe, bIm) << "i)" << endl; break;;;
           default:;
       }



    } while (operation != 5);

    system("PAUSE");
    return EXIT_SUCCESS;
}