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 // template <class charT, class traits> 16 // void swap(basic_ifstream<charT, traits>& x, basic_ifstream<charT, traits>& y); 17 18 #include <fstream> 19 #include <cassert> 20 21 int main() 22 { 23 { 24 std::ifstream fs1("test.dat"); 25 std::ifstream fs2("test2.dat"); 26 swap(fs1, fs2); 27 double x = 0; 28 fs1 >> x; 29 assert(x == 4.5); 30 fs2 >> x; 31 assert(x == 3.25); 32 } 33 { 34 std::wifstream fs1("test.dat"); 35 std::wifstream fs2("test2.dat"); 36 swap(fs1, fs2); 37 double x = 0; 38 fs1 >> x; 39 assert(x == 4.5); 40 fs2 >> x; 41 assert(x == 3.25); 42 } 43 } 44
