49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <fstream>
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// template <class charT, class traits = char_traits<charT> >
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// class basic_fstream
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// void open(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out);
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#include <fstream>
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#include <cassert>
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int main()
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{
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{
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std::fstream fs;
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assert(!fs.is_open());
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fs.open("test.dat", std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc);
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assert(fs.is_open());
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double x = 0;
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fs << 3.25;
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fs.seekg(0);
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fs >> x;
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assert(x == 3.25);
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}
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std::remove("test.dat");
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{
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std::wfstream fs;
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assert(!fs.is_open());
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fs.open("test.dat", std::ios_base::in | std::ios_base::out
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| std::ios_base::trunc);
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assert(fs.is_open());
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double x = 0;
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fs << 3.25;
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fs.seekg(0);
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fs >> x;
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assert(x == 3.25);
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}
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std::remove("test.dat");
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}
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