Re: C++ Primer ex 9.14

From:

Barry <dhb2000@gmail.com>

Newsgroups:

comp.lang.c++

Date:

Sun, 16 Sep 2007 20:43:21 +0800

Message-ID:

<fcj8er$nep$1@aioe.org>

Erik Wikstr??m wrote:

On 2007-09-16 12:43, arnuld wrote:

/* C++ Primer -
4/e
*
*
STATEMENT
* write a program to read sequence of strings from the
standard *
input into a vector. Print the
vector.
*
*/

#include
<iostream>
#include
<string>
#include
<vector>
#include
<iterator>

int
main()
{
  std::vector<std::string>
svec;
  std::string
word;

  while( std::cin >> word
)

{
      svec.push_back( word
);

}

  /* print the vector
*/
  std::cout << "\n\n----- You Entered
-------\n\n";
  std::copy( svec.begin(),
svec.end(),
             std::ostream_iterator<std::string>( std::cout, "\n" )
);


  return
0;
}

It runs fine. Is there any way I can replace what while loop with
std::copy ?

Might be, you would have to use std::istream_iterators and a back insert
iterator to add the elements to the vector, something like (untested):

std::copy(
  std::istream_iterator<std::string>(std::cin),
  std::istream_iterator<std::string>() // The same as end() for a stream
  std::back_insert_iterator<std::vector>(vec)

std::back_insert_iterator<std::vector<std::string> >(vec)

or just simply use adapter, which is more straightforward

std::back_inserter(vec)

);

--
Thanks
Barry