// counter.cpp - C++ equivalent to counter.pl

#include <fstream.h>

main() {

  // Read count from file
  ifstream in("counter.txt");
  int count = 0;
  if (in) {
    in >> count;
  }
  in.close();

  // Add 1 and save
  count = count + 1;
  ofstream out("counter.txt");
  if (out)
    out << count << "\n";
  out.close();

  // Display the new count
  cout << count;
}