// Code derived from Stroustrup's PPP2 book
// § 6.3 Back to the calculator!
//  -and beginning on p 178

#include <iostream>

using std::cout;

int main()
{
  cout << (2 + 2) << '\n';           // 4
  cout << (2 + 2 * 3) << '\n';       // 8
  cout << (2 + 3 - 25 / 5) << '\n';  // 0
}