SOURCE FILE: makeList.cpp

/* 

   This program generates a file containing a series of eight-digit,
   non-negative numbers.  It asks you how many numbers you want and it asks
   you for a file name.  It then writes the desired number of integers into
   the file, one number per line.

   WARNING: if the file name you give is the name of a file that already
   exists, that pre-existing file will be destroyed.

*/

#include <fstream>
#include <iostream>
#include <stdexcept>
#include <string>
#include<iomanip>

#include <time.h>

using namespace std;

const int numDigits = 8 ;

int main()
{
  int howMany ;
  string fileName ;

  cout << "Enter the number of integers you would like to generate: " ;
  cin >> howMany ;
  cout << "Enter the name of the file to put the integers in: " ;
  cin >> fileName; 
  ofstream outFile(fileName.c_str()) ;

  srand(time(NULL)) ;
  int i, j ;
  for (i=1; i<=howMany; i++)
  {
    for (j=0; j<numDigits; j++) outFile.put('0' + rand()%10) ;
    outFile.put('\n') ;
  }
  return 0 ;
}