forked from OSchip/llvm-project
77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. 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_ofstream
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// void swap(basic_ofstream& rhs);
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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::ofstream fs1("test1.dat");
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std::ofstream fs2("test2.dat");
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fs1 << 3.25;
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fs2 << 4.5;
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fs1.swap(fs2);
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fs1 << ' ' << 3.25;
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fs2 << ' ' << 4.5;
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}
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{
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std::ifstream fs("test1.dat");
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double x = 0;
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fs >> x;
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assert(x == 3.25);
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fs >> x;
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assert(x == 4.5);
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}
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remove("test1.dat");
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{
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std::ifstream fs("test2.dat");
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double x = 0;
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fs >> x;
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assert(x == 4.5);
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fs >> x;
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assert(x == 3.25);
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}
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remove("test2.dat");
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{
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std::wofstream fs1("test1.dat");
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std::wofstream fs2("test2.dat");
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fs1 << 3.25;
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fs2 << 4.5;
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fs1.swap(fs2);
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fs1 << ' ' << 3.25;
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fs2 << ' ' << 4.5;
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}
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{
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std::wifstream fs("test1.dat");
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double x = 0;
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fs >> x;
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assert(x == 3.25);
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fs >> x;
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assert(x == 4.5);
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}
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remove("test1.dat");
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{
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std::wifstream fs("test2.dat");
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double x = 0;
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fs >> x;
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assert(x == 4.5);
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fs >> x;
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assert(x == 3.25);
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}
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remove("test2.dat");
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}
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