/* * * * * * * * * * * * * * * * * * *
  Name: Nathanael Paul
  Userid: nrpaul
  Section #: 0
  Date: October 2, 2000
  Program #: 51 
  Program Desc:  Demonstrates file I/O
* * * * * * * * * * * * * * * * * * * */ 

#include <iostream>	// cin, cout, endl
#include <string>	// string 
#include <fstream>	// File I/O (ifstream and ofstream)

using namespace std;

/* * * * * * * * * * * * * * * *
  Name: int main()
  Parameters: none
  Description: Demonstrates file I/O
* * * * * * * * * * * * * * * */
int main() {
  // create the file streams to do I/O
  ifstream inData;
  ofstream outData;
  string line;

  // open input.dat in order to do I/O 
  inData.open("input.dat");

  // test to see if successful at opening the file input.dat
  if(!inData) {
    cout << "Can't open the input file." << endl;
    return 1;
  }

  // open an output file
  outData.open("results.dat"); 

  if(!outData) {
    cout << "Can't open the output file." << endl;
    return 1;
  }

  // read first part
  inData >> line;

  // read rest of file
  while(inData) {
    cout << "Reading data..." << endl;

    //inData >> line;
    cout << "Outputting data..." << endl;
//    outData << line << endl;
    cout << line << endl;
    // try commenting out the next line of code while uncommenting the
    //  6th line above it.  What is different to results.dat?
    // why?
    inData >> line;
  } 

  // close the files
  inData.close();
  outData.close();

  return 0;
}