1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <fstream> 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// template <class charT, class traits = char_traits<charT> > 13bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// class basic_ifstream 14bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 15bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// void open(const string& s, ios_base::openmode mode = ios_base::in); 16bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <fstream> 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 23bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::ifstream fs; 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!fs.is_open()); 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant char c = 'a'; 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant fs >> c; 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(fs.fail()); 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == 'a'); 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant fs.open(std::string("test.dat")); 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(fs.is_open()); 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant fs >> c; 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == 'r'); 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant { 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::wifstream fs; 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(!fs.is_open()); 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant wchar_t c = L'a'; 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant fs >> c; 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(fs.fail()); 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L'a'); 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant fs.open(std::string("test.dat")); 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(fs.is_open()); 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant fs >> c; 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(c == L'r'); 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant } 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 47