#include <iostream>
#include <iomanip>
#include <fstream>
#include <cstdlib>
 
using namespace std;
void check_blank(ifstream& instream, ofstream& outstream);
int number = 0; //keeps track of how many spaces have been deleted
 
int main() 
{
  ifstream instream;
  ofstream outstream;
  bool     t;
 
  instream.open("hw4pr6input.txt");         //Open file: text to be edited
  if(!instream.fail())                      //Make sure file opened successfully
  {
  cout << "test from open";
     //Call function that finds blanks and edits
  }
  else
  {
    cout << "File failed to open (1st)";
    exit(1);
  }
 
  outstream.open("hw4pr6output.txt");       //Open file: edited text will go
  if(!outstream.fail())                     //Check if open failed
  {
   t = true;   
   check_blank(instream, outstream);              //Call function to input edited text into file
  }
  else
  {
    cout << "File failed to open (2nd)";
    exit(1);  
  }
 
  cout << "Removed " << number              
       << " blanks from file" 
       << endl;
 
  system("PAUSE");
  instream.close();                         //Close both files
  outstream.close();
 
  return 0;
}                                                  //End main
 
void check_blank(ifstream& instream, ofstream& outstream)
{
  char a;
 
  int count  = 0;                               //Variable tells if there are multiple blank spaces
 
  while(! instream.eof())                  //While the file isn't at the end
   {
     instream.get(a);
     if(a == ' ')                                 //If the input is a space
     {
          number++;  
          count++;
                                                     //Add 1 to number & count
          if(a == ' ' && count >= 2)      //If there are 2 or more spaces then do this
          {
             outstream << ' ';
             count = 0;                         //reset count
          }  //end inner if
     }   //end outer if    
     else
     {
       outstream << a;  
     }
 
   }//end while
}//end check function