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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <fstream>
// template <class charT, class traits = char_traits<charT> >
// class basic_ifstream
// void open(const char* s, ios_base::openmode mode = ios_base::in);
#include <fstream>
#include <cassert>
int main()
{
{
std::ifstream fs;
assert(!fs.is_open());
char c = 'a';
fs >> c;
assert(fs.fail());
assert(c == 'a');
fs.open("test.dat");
assert(fs.is_open());
fs >> c;
assert(c == 'r');
}
{
std::wifstream fs;
assert(!fs.is_open());
wchar_t c = L'a';
fs >> c;
assert(fs.fail());
assert(c == L'a');
fs.open("test.dat");
assert(fs.is_open());
fs >> c;
assert(c == L'r');
}
}
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