1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // FILE_DEPENDENCIES: test.dat
10 
11 // <fstream>
12 
13 // template <class charT, class traits = char_traits<charT> >
14 // class basic_ifstream
15 
16 // explicit basic_ifstream(const char* s, ios_base::openmode mode = ios_base::in);
17 
18 #include <fstream>
19 #include <cassert>
20 
21 #include "test_macros.h"
22 
23 int main(int, char**)
24 {
25     {
26         std::ifstream fs("test.dat");
27         double x = 0;
28         fs >> x;
29         assert(x == 3.25);
30     }
31     // std::ifstream(const char*, std::ios_base::openmode) is tested in
32     // test/std/input.output/file.streams/fstreams/ofstream.cons/pointer.pass.cpp
33     // which creates writable files.
34 
35 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
36     {
37         std::wifstream fs("test.dat");
38         double x = 0;
39         fs >> x;
40         assert(x == 3.25);
41     }
42     // std::wifstream(const char*, std::ios_base::openmode) is tested in
43     // test/std/input.output/file.streams/fstreams/ofstream.cons/pointer.pass.cpp
44     // which creates writable files.
45 #endif
46 
47   return 0;
48 }
49