// Soln3_4.cpp
  include <iostream>
  using std::cout;
  
  const int text = 0x01;
  const int binary = 0x02;
  
  const int read = 0x10;
  const int write = 0x20;
  const int append = 0x30;
  
  int main()
  {
     int mode = text | read;
  
     if (mode & text)
        cout << "mode is (text,";
     else if (mode & binary)
        cout << "mode is (binary,";
  
     if (mode & read)
        cout << "read)\n";
     else if (mode & write)
        cout << "write)\n";
     else if (mode & append)
        cout << "append)\n";
  
     return 0;
  }