/* Filename:  makeint.cpp

   Author:  Br. David Carlson

   Date:  February 1, 1998

   Last Modified:  February 21, 2013

   This program creates a binary file, called int.dat, that contains 100
   integers (specifically 1000, 990, 980, ..., 10, just as a convenient test).

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

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

void WriteToFile(fstream & OutFile);


int main(void)
   {
   fstream OutFile;

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

   WriteToFile(OutFile);
   OutFile.close();   // very important to close an output file
   return 0;
   }


/* Given:   OutFile   A binary file stream already opened for output.
   Task:    To write 1000, 990, ..., 10 to OutFile.
   Return:  OutFile   The modified file stream.
*/
void WriteToFile(fstream & OutFile)
   {
   const int Max = 100;
   int k, Num, IntSize;

   IntSize = sizeof(Num);

   for (k = 0; k < Max; k++)
      {
      Num = 1000 - 10 * k;
      OutFile.write(reinterpret_cast <char *> (&Num), IntSize);
      }
   }