Re: sorting the input

A program that asks user to input words and then prints them in
alphabetical order. I have used vectors to accomplish task. That left me
wondering with 2 questions:

  1) whether list will be a good idea. I am basically concerned about C=

  efficiency.

  2) Is the program is a C++ program or C program written in C++.

/* A program that will ask user for input and then will print them
 * in an alphabetical order
 *
 * VERSION 1.0
 *
 */

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

void ask_input( std::vector<std::string>& );
void print_vector( const std::vector<std::string>& );

int main()
{
  std::vector<std::string> svec;
  std::vector<std::string>& r_svec = svec;

  ask_input( r_svec );

  // sort the input
  std::sort( r_svec.begin(), r_svec.end() );

  std::cout << "--------------------------------"
            << std::endl;

  print_vector( r_svec );

  return 0;

}

void ask_input( std::vector<std::string>& svec )
{
  std::string str;

  while( std::cin >> str )
    {
      svec.push_back( str );
    }

}

void print_vector( const std::vector<std::string>& svec )
{
  std::vector<std::string>::const_iterator iter = svec.begin();

  for( ; iter != svec.end(); ++iter )
    {
      std::cout << *iter << std::endl;
    }

}