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