//////////////////////////////////////////////////
//  files.cpp  - How do I write and read files? //
//////////////////////////////////////////////////
#include <iostream>
#include <fstream>
#include <string>
using namespace std;

void main() {

  ofstream out("test.dat");
  if(!out.good()) {
    cout << "\n  can't open file test.dat for writing\n\n";
    return;
  }
  else {
    cout << "\n  writing to file test.dat\n\n";
    out << "first line\n";
    out << "second line\n";
    out << "last line\n";
  }
  out.close();

  ifstream in("test.dat");
  if(!in.good()) {
    cout << "\n  can't open file test.dat for reading\n\n";
    return;
  }

  cout << "\n  reading from file test.dat\n\n";
  string line;
  while(in.good()) {
    getline(in,line);
    cout << "  " << line << endl;
  }
  cout << endl;
}