c++ STL istream_iterator<> demo

#include <iostream>#include <vector>#include <algorithm>using namespace std;int main(){istream_iterator<int> is(cin);istream_iterator<int> eof;vector<int> ivec;copy(is, eof, back_inserter(ivec));sort(ivec.begin(), ivec.end());ostream_iterator<int> os(cout, " ");copy(ivec.begin(), ivec.end(), os);getchar();return 0;}