#include <iostream>
#include <cmath>
#define o 3.14159/180
#define E 0.001
using namespace std;

double f(double x);
double calka(double a, double b);
double tgd(double deg);
double sind(double deg);
double cosd(double deg);
double prcnt(double x);

void cal()
{
    float x = 0;
    float y = 0;
    int mode = 0;
    bool flag = true;
    float result = 0;
    bool flag1 = true;
    //long funkcja(int x);

    /*long funkcja(int x)
    {
        if (x < 1) return 1;
        return x*funkcja(x - 1);
    }
    */

    while (flag)
    {
        cout << "Wybierz dzialanie : " << endl << "1. Dodawanie: " << endl << "2. Odejmowanie:  " << endl << "3. Mnozenie: " << endl << "4.Dzielenie: " << endl << "5.Calka" << endl << "6. Sinus(Dla pierwszego inputa)" << endl << "7.Cosinus(Dla pierwszego inputa)" << endl << "8.Tanges(Dla pierwszego inputa)" << endl << "9.Procenty(Dla pierwszego inputa)" << endl << "[test]10.NWD(a,b)" << endl << "0.Wyjscie" << endl;
        cin >> mode;
        if (mode == 0)
            break;
                        cout << "Podaj pierwsza liczbe : " << endl;
                        cin >> x;
                        if (!cin)
                        {
                            cout << "Zly input" << endl;

                            break;
                        }

                        if (mode != 6 && mode != 7 && mode != 8)
                        {
                            cout << "Podaj druga liczbe :" << endl;
                            cin >> y;
                            if (!cin)
                            {
                                cout << "Zly input" << endl;

                                break;
                            }
                        }







            switch (mode)
            {
            case 1:
            {
                      result = x + y;

                      cout << "= " << result << endl;
                      break;
            }

            case 2:
            {
                      result = x - y;
                      cout << "= " << result << endl;
                      break;
            }

            case 3:
            {
                      result = x * y;
                      cout << "= " << result << endl;
                      break;
            }

            case 4:
            {
                      if (y == 0)
                      {

                          cout << "Mianownik nie moze byc zerem, zmien liczby" << endl;
                          break;
                      }

                      result = x / y;
                      cout << "= " << result << endl;
                      break;
            }
            case 5:
            {

                      result = calka(x, y);

                      cout << "= " << result << endl;
                      break;

            }

            case 6:
            {

                      result = sind(x);

                      cout << "= " << result << endl;
                      break;

            }
            case 7:
            {
                      result = cosd(x);
                      cout << "= " << result << endl;
                      break;
            }
            case 8:
            {
                      result = tgd(x);
                      cout << "= " << result << endl;
                      break;
            }
            case 9:
            {
                      result = prcnt(x);
                      cout << "= " << result << endl;
                      break;
            }
            case 10:
            {
                     //  result =
                       cout << "= " << result << endl;
                       break;
            }
            case 0:
            {
                      flag = false;
            }

            }


    }


}
/*long funkcja(int x)
{
    if (x < 1) return 1;
    return x*funkcja(x - 1);
}*/
double prcnt(double x){
    return x / 100;
}
double f(double x){
    return x*x;
}
double tgd(double deg){
    return tan(deg*o);
}

double calka(double a, double b){
    double hlp, summa = 0;
    for (hlp = a + E / 2; hlp<b; hlp += E)
        summa += f(hlp)*E;
    return summa;
}



double sind(double deg){
    return sin(deg*o);
}

double cosd(double deg){
    return cos(deg*o);
}

int main()
{
    cal();

    return 0;
}