#include <iostream>

using namespace std;

void swap1(int a, int b) {
  int tmp = a;
  a = b;
  b = tmp;
}

void swap2(int *a, int *b) {
  int tmp = *a;
  *a = *b;
  *b = tmp;
}

void swap3(int &a, int &b) {
  int tmp = a;
  a = b;
  b = tmp;
}

int kvadrat(const int &x = 0) {
  return x * x;
}

inline int kub(int x = 0) {
  return x * x * x;
}

inline double kub(double x) {
  return x * x * x;
}


int main() {
  int x = 1, y(3);
  
  cout << "Hello, world" << endl;
  cout << "x = " << x << endl;
  
  // bool b;
  cout << "y = " << y << endl;

  cin >> x >> y;
  cout << "x = " << x << endl;
  cout << "y = " << y << endl;

  swap1(x, y);

  cout << "x = " << x << endl;
  cout << "y = " << y << endl;

  swap2(&x, &y);

  cout << "x = " << x << endl;
  cout << "y = " << y << endl;

  swap3(x, y);

  cout << "x = " << x << endl;
  cout << "y = " << y << endl;


  /*
  int n;
  cout << "Unesi n" << endl;
  cin >> n;

  int *niz = new int[n];
  for (int i = 0; i < n; i++)
    niz[i] = i * i;

  for (int i = 0; i < n; i++)
    cout << niz[i] << endl;

  delete [] niz;
  */

  int z = 5;
  cout << kvadrat(z) << endl;

  cout << kub(1) << endl;
  cout << kub(1.1) << endl;
  
  return 0;
}