std::experimental::filesystem::temp_directory_path (3) - Linux Manuals

std::experimental::filesystem::temp_directory_path: std::experimental::filesystem::temp_directory_path

NAME

std::experimental::filesystem::temp_directory_path - std::experimental::filesystem::temp_directory_path

Synopsis

Defined in header <experimental/filesystem>
path temp_directory_path(); (1) (filesystem TS)
path temp_directory_path( error_code& ec );

Returns the directory location suitable for temporary files.

Parameters

(none)

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.

Exceptions

The overload that does not take a error_code& parameter throws filesystem_error on underlying OS API errors, constructed with path to be returned as the first argument and the OS error code as the error code argument. std::bad_alloc may be thrown if memory allocation fails. The overload taking a error_code& parameter sets it to the OS API error code if an OS API call fails, and executes ec.clear() if no errors occur. This overload has
noexcept specification:
noexcept

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

Example

// Run this code

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

Possible output:

  Temp directory is "C:\Windows\TEMP\"