1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <fstream> 10 11 // template <class charT, class traits = char_traits<charT> > 12 // class basic_fstream 13 14 // explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in | ios_base::out); 15 16 #include <fstream> 17 #include <cassert> 18 #include "platform_support.h" 19 20 int main(int, char**) 21 { 22 std::string temp = get_temp_file_name(); 23 { 24 std::fstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out 25 | std::ios_base::trunc); 26 double x = 0; 27 fs << 3.25; 28 fs.seekg(0); 29 fs >> x; 30 assert(x == 3.25); 31 } 32 std::remove(temp.c_str()); 33 { 34 std::wfstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out 35 | std::ios_base::trunc); 36 double x = 0; 37 fs << 3.25; 38 fs.seekg(0); 39 fs >> x; 40 assert(x == 3.25); 41 } 42 std::remove(temp.c_str()); 43 44 return 0; 45 } 46