The following two simple programs sort all strings read from the standard input and print them without duplicates, by using two different containers. Compared with ordinary C or C++, the example does a lot of complex processing by using only a few statements:
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iterator>
using namespace std;
void 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
// vector<string> coll(istream_iterator<string> (cin), istream_iterator());
sort(coll.begin(), coll.end()); // sort elements
// print
