/* Filename:  readint.cpp

   Author:  Br. David Carlson

   Date:  February 1, 1998

   Last Modified:  February 21, 2013

   This program reads a binary file, called int.dat, that contains
   all integers and displays them on the screen.  See the makeint
   program to create such a file of 100 ints, although this readint
   program can handle a file of any number of ints.

   Tested with:
      Microsoft Visual C++ 6.0
      Microsoft Visual C++ .NET
      g++ under Linux
*/

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

void DisplayFile(fstream & InFile);


int main(void)
   {
   fstream InFile;

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

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


/* Given:   InFile   A binary file stream of ints already opened for input.
   Task:    To read and display on screen the ints from InFile.
   Return:  InFile   The modified file stream.
*/
void DisplayFile(fstream & InFile)
   {
   int Num, IntSize;

   IntSize = sizeof(Num);

   InFile.read(reinterpret_cast <char *> (&Num), IntSize);

   while (! InFile.fail())
      {
      cout << setw(8) << Num;
      InFile.read(reinterpret_cast <char *> (&Num), IntSize);
      }

   cout << endl;
   }