/* Filename:  readtext.cpp

   Author:  Br. David Carlson

   Date:  February 1, 1998

   Last Revised:  February 21, 2013

   This program prompts the user for the name of a text file to read.
   It then displays the file's contents on the screen.

   Tested with:
      Microsoft Visual C++ 2008
      g++ under Linux
*/

#include <iostream>
#include <fstream>   // needed for files
using namespace std;

const int MaxString = 120;
typedef char StringType[MaxString];

void DisplayFile(fstream & InFile);


/* Given:   InFile   A file stream already opened for input.
   Assumes: That InFile is associated with a text file.
   Task:    To display on screen the contents of the file.
   Return:  InFile   The modified file stream.
*/
void DisplayFile(fstream & InFile)
   {
   StringType Line;
   int LineCount = 0;

   InFile.getline(Line, MaxString);

   while (! InFile.fail())
      {
      cout << Line << endl;
      LineCount++;
      if (LineCount == 22)
         {
         LineCount = 0;
         cout << "   Press ENTER to go on...";
         cin.get();
         }
      InFile.getline(Line, MaxString);
      }

   if (LineCount != 0)
      {
      cout << "   Press ENTER to go on...";
      cin.get();
      }
   }


int main(void)
   {
   StringType FileName;
   fstream InFile;

   cout << "Enter the name of the text file to be read: ";
   cin.getline(FileName, MaxString);

   InFile.open(FileName, ios::in);
   if (InFile.fail())
      {
      cerr << "Could not open file " << FileName << endl;
      exit(1);
      }

   DisplayFile(InFile);
   InFile.close();
   return 0;
   }