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std::basic_fstream::close(3) C++ Standard Libary std::basic_fstream::close(3) NAME std::basic_fstream::close - std::basic_fstream::close Synopsis void close(); Closes the associated file. Effectively calls rdbuf()->close(). If an error occurs during opera- tion, setstate(failbit) is called. Parameters (none) Return value (none) Notes This function is called by the destructor of basic_fstream when the stream object goes out of scope and is not usually invoked directly. Example // Run this code #include <string> #include <fstream> #include <iostream> int main() { std::fstream f1("example1", std::ios::out), f2("example2", std::ios::out), f3("example3", std::ios::out); std::cout << std::boolalpha << f1.is_open() << '\n' << f2.is_open() << '\n' << f3.is_open() << '\n'; f1.close(); f2.close(); std::cout << f1.is_open() << '\n' << f2.is_open() << '\n' << f3.is_open() << '\n'; } Possible output: true true true false false true See also is_open checks if the stream has an associated file (public member function) open opens a file and associates it with the stream (public member function) close flushes the put area buffer and closes the associated file (public member function of std::basic_filebuf<CharT,Traits>) http://cppreference.com 2022.07.31 std::basic_fstream::close(3)
NAME | Synopsis | Parameters | Return value | Notes | Example | Possible output: | See also
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