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 // <fstream>
11 
12 // template <class charT, class traits = char_traits<charT> >
13 // class basic_ifstream
14 
15 // explicit basic_ifstream(const char* s, ios_base::openmode mode = ios_base::in);
16 
17 #include <fstream>
18 #include <cassert>
19 
main()20 int main()
21 {
22     {
23         std::ifstream fs("test.dat");
24         double x = 0;
25         fs >> x;
26         assert(x == 3.25);
27     }
28     {
29         std::ifstream fs("test.dat", std::ios_base::out);
30         double x = 0;
31         fs >> x;
32         assert(x == 3.25);
33     }
34     {
35         std::wifstream fs("test.dat");
36         double x = 0;
37         fs >> x;
38         assert(x == 3.25);
39     }
40     {
41         std::wifstream fs("test.dat", std::ios_base::out);
42         double x = 0;
43         fs >> x;
44         assert(x == 3.25);
45     }
46 }
47