1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <iterator>
11 
12 // class istream_iterator
13 
14 // istream_iterator(istream_type& s);
15 
16 #include <iterator>
17 #include <sstream>
18 #include <cassert>
19 
20 int main()
21 {
22     std::istringstream inf(" 1 23");
23     std::istream_iterator<int> i(inf);
24     assert(i != std::istream_iterator<int>());
25     assert(inf.peek() == ' ');
26     assert(inf.good());
27     int j = 0;
28     inf >> j;
29     assert(j == 23);
30 }
31