stl/ioiter1.cpp

The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference
by Nicolai M. Josuttis, Addison-Wesley, 1999
© Copyright Nicolai M. Josuttis 1999


#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <iterator>
using namespace std;

int main()
{
    vector<string> coll;

    /* read all words from the standard input
     * - source: all strings until end-of-file (or error)
     * - destination: coll (inserting)
     */
    copy (istream_iterator<string>(cin),    // start of source
          istream_iterator<string>(),       // end of source
          back_inserter(coll));             // destination

    // sort elements
    sort (coll.begin(), coll.end());

    /* print all elements without duplicates
     * - source: coll
     * - destination: standard output (with newline between elements)
     */
    unique_copy (coll.begin(), coll.end(),             // source
                 ostream_iterator<string>(cout,"\n")); // destination
}