/*------------------------- concord.cc -------------------------------
Note: you may need to change this filename to concord.cpp or concord.C
A concordance is a reference book which lists all the words in some
corpus (such as the Bible or the works of Shakespeare).  This simple
concordance takes a text file (from standard input) and lists all
the words (separated by white space) in the file in alphabetical
order.  You may supply input from the keyboard or from a text file:
	concord < textfile.txt
This program makes use of classes from the Standard Library of C++:
string and set.  The latter is one of a family of collection classes
from the Standard Template Library which has been incorporated into
the C++ standard.  A more useful concordance might use the STL's map
class to keep track of additional information associated with each
word in the input as well as make finer distinctions about word
separators.  
Author: Glenn D. Blank, 3/31/98
-------------------------------------------------------------------*/

#include <string>
#include <set>
#include <iterator.h>
#include <iostream.h>

//In compilers that require use of namespaces to access the standard library,
// uncomment the following:
//using namespace std; //make names declared in std accessible in this scope

//Need to instantiate a template for a set of strings
template class set<string,less<string> >;

void main(int argc, char* argv[]) 
{ 
  set<string,less<string> > concordance; //create concordance
  string word;		//a word from input to store in concordance
  while (!cin.eof())	//up to end of file (ctrl-Z from DOS prompt)
  { cin >> word;	//read a word up to a space, tab or new line
    concordance.insert(word); //insert word in concordance
  }
  //display concordance by copying from concordance to ostream
  copy(concordance.begin(),concordance.end(),
	ostream_iterator<string>(cout,"\n"));
}