2008-11-03 |  RatheeshTR  | Viewed: 362  |    0

#include <algorithm>
#include <string>
#include <list>
#include <iterator>

#include <assert.h>
#include <iostream.h>
#include <fstream.h>

/**************************************************************
*  text  read:
Alice  Emma  has  long  flowing  red  hair.  Her  Daddy  says
when  the  wind  blows  through  her  hair,  it  looks  almost  alive,
like  a  fiery  bird  in  flight.  A  beautiful  fiery  bird,  he  tells  her,
magical  but  untamed.  "Daddy,  shush,  there  is  no  such  thing,"
she  tells  him,  at  the  same  time  wanting  him  to  tell  her  more.
Shyly,  she  asks,  "I  mean,  Daddy,  is  there?"
****************************************************************
*  output  of  program:
*  count():  fiery  occurs  2  times
****************************************************************
*/

int main()
{
ifstream infile( "alice_emma" );
assert ( infile != 0 );

list<string,allocator> textlines;

typedef list<string,allocator>::difference_type diff_type;
istream_iterator< string, diff_type > instream( infile ),
eos;

copy( instream, eos, back_inserter( textlines ));
string search_item( "fiery" );

/************************************************************
*  note:  this  is  the  Standard  C++  interface  for  using  count()
*              however,  the  current  RogueWave  implementation
*              supports  the  earlier  version  in  which  distance_type
*              had  not  been  developed,  and  so  count()  returned  its
*              value  via  a  final  argument  to  itself.
*
*  this  is  how  the  invocation  should  occur:
*
*  typedef  iterator_traits<InputIterator>::
*                                distance_type  dis_type;
*
*  dis_type  elem_count;
*  elem_count  =  count(  textlines.begin(),  textlines.end(),
*                                      search_item  );
************************************************************/

int elem_count = 0;
list<string,allocator>::iterator
ibegin = textlines.begin(),
iend   = textlines.end();

//  obsolete  form  of  count()
count( ibegin, iend, search_item, elem_count );

cout << "count(): " < search_item<< " occurs "  << elem_count << " times\n";
}