| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <fstream> |
| |
| // template <class charT, class traits = char_traits<charT> > |
| // class basic_ifstream |
| |
| // template <class charT, class traits> |
| // void swap(basic_ifstream<charT, traits>& x, basic_ifstream<charT, traits>& y); |
| |
| #include <fstream> |
| #include <cassert> |
| |
| int main(int, char**) |
| { |
| { |
| std::ifstream fs1("test.dat"); |
| std::ifstream fs2("test2.dat"); |
| swap(fs1, fs2); |
| double x = 0; |
| fs1 >> x; |
| assert(x == 4.5); |
| fs2 >> x; |
| assert(x == 3.25); |
| } |
| { |
| std::wifstream fs1("test.dat"); |
| std::wifstream fs2("test2.dat"); |
| swap(fs1, fs2); |
| double x = 0; |
| fs1 >> x; |
| assert(x == 4.5); |
| fs2 >> x; |
| assert(x == 3.25); |
| } |
| |
| return 0; |
| } |