gistfile1.cpp

#include <iostream>
#include <math.h>

using namespace std;

void choinka(int n, int add = 0)
{
     n *= 2;
     for(int i = 1; i <= n; i++)
     {
         for(int k = ((n - i) / 2) + add; k >= 0; k--)
         {
             cout << " ";
         }
         for(int j = 1; j <= i; j++)
         {
             if(i % 2 != 0)
             {
                 cout << "*";
             }
         }
         if(i % 2 == 0)
             cout << endl;
     }
}

int main() 
{
    int act, z, x, poz, pien_poz;
    int a, b, c, delta;
    int n = 1, y = 1;
    cout << "==== MENU ====" << endl;
    cout << "1. Choinka. " << endl;
    cout << "2. Wpisuj liczbe dopoki i != 0. " << endl;
    cout << "3. Trojmian. " << endl;
    cout << "4. Choinka 2" << endl;
    cout << "5. Choinka 3" << endl << endl;
    
    cout << "Akcja: ";
    cin >> act;
    
    switch(act) {
        case 1:
             cout << "Wysokosc choinki: ";
             cin >> n;
             for(int i = 1; i <= n; i++)
             {
                 for(int j = 1; j <= i; j++)
                 {
                     cout << "*";
                 }
                 cout << endl;
             }
             z = 1;
             while(z <= n)
             {
                 x = 1;
                 while(x <= z)
                 {
                     cout << "*";
                     x++;
                 }
                 cout << endl;
                 z++;
             }
             break;
        case 2:
             for(int i = 1; n != 0; i++)
             {
                 cin >> n;
             }
             cout << "Zero!" << endl;;
             while(y != 0)
             {
                 cin >> y;
             }
             cout << "Koniec!";
             break;
        case 3:
             cout << "Podaj A: ";
             cin >> a;
             cout << "Podaj B: ";
             cin >> b;
             cout << "Podaj C: ";
             cin >> c;
             
             delta = pow(b, 2) - 4*a*c;
             if(delta < 0)
             {
                 cout << "DELTA JEST UJEMNA!" << endl;
                 break;
             }
             if(delta == 0)
             {
                 cout << "x = " << -b / 2 * a;
             } else {
                 cout << "x1 = " << (-b + sqrt(delta)) / 2 * a << endl; 
                 cout << "x2 = " << (-b - sqrt(delta)) / 2 * a << endl;      
             }    
             break;
        case 4:
             cout << "Wysokosc choinki: ";
             cin >> n;
             choinka(n);
             break;
        case 5:
             cout << "Ilosc poziomow choinki: ";
             cin >> poz;
             for(int i = 0; i < poz; i++)
             {
                 choinka(2 + i, poz - i);
             }
             pien_poz = (poz * 2) - 1;
             for(int i = 0; i < poz; i++)
             {
                 for(int j = 0; j < pien_poz; j++)
                 {
                     cout << " ";
                 }
                 cout << "*";
                 cout << endl;
             }
             break;
    }
             
    
    getchar();
    getchar();
    return 0;  
}