std::filesystem::temp_directory_path - cppreference.com (original) (raw)

Defined in header
path temp_directory_path(); (1) (since C++17)
path temp_directory_path( std::error_code& ec ); (2) (since C++17)

Returns the directory location suitable for temporary files.

[edit] Parameters

(none)

[edit] Return value

A directory suitable for temporary files. The path is guaranteed to exist and to be a directory. The overload that takes error_code& argument returns an empty path on error.

[edit] Exceptions

Any overload not marked noexcept may throw std::bad_alloc if memory allocation fails.

  1. Throws std::filesystem::filesystem_error on underlying OS API errors, constructed with path to be returned as the first path argument and the OS error code as the error code argument.

  2. Sets a std::error_code& parameter to the OS API error code if an OS API call fails, and executes ec.clear() if no errors occur.

[edit] Notes

On POSIX systems, the path may be the one specified in the environment variables TMPDIR, TMP, TEMP, TEMPDIR, and, if none of them are specified, the path "/tmp" is returned.

On Windows systems, the path is typically the one returned by GetTempPath.

[edit] Example

#include #include namespace fs = std::filesystem;   int main() { std::cout << "Temp directory is " << fs::temp_directory_path() << '\n'; }

Possible output:

Temp directory is "C:\Windows\TEMP"

[edit] See also

| | creates and opens a temporary, auto-removing file (function) [edit] | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | returns or sets the current working directory (function) [edit] |