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 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
