zad_3_1

#define _USE_MATH_DEFINES
#include <iostream>
#include <cmath>

using namespace std;

char type = ' ';

int main()
{
    cout << "P, K czy T???: ";
    cin >> type;

    if(type=='p'||type=='P')
        {
            int a = 0;
            int b = 0;
            int w = 0;
            cout << "podaj bok a: ";
            cin >> a;
            cout << "podaj bok b: ";
            cin >> b;
            w = a*b;
            cout << "Pole prostokata wynosi: " << w;
        }
    else if(type=='t'||type=='T')
        {
            int a = 0;
            int h = 0;
            int w = 0;
            cout << "podaj podstawe: ";
            cin >> a;
            cout << "podaj wysokosc: ";
            cin >> h;
            w = (a*h)/2;
            cout << "Pole trojkata wynosi: " << w;
        }
    else if(type=='k'||type=='K')
        {
            int r = 0;
            int w = 0;
            cout << "podaj promien: ";
            cin >> r;
            w = pow(r,2)*M_PI;
            cout << "Pole kola wynosi: " << w;
        }
    else
        {
            cout << "Podano nieprawidlowy znak";
        }
}