From cppreference.com
Defined in header
pathtemp_directory_path(); (1) (since C++17)pathtemp_directory_path(std::error_code&ec); (2) (since C++17)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
Any overload not marked noexcept may throw
if memory allocation fails.
1) Throws
std::filesystem::filesystem_error
on underlying OS API errors, constructed with pathtobereturned 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.
() if no errors occur.
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
.
Example
Run this code
#include<filesystem>#include<iostream>namespacefs=std::filesystem;intmain(){std::cout<<"Temp directory is "<<fs::temp_directory_path()<<'\n';}Possible output:
Temp directory is "C:\Windows\TEMP\" See also
creates and opens a temporary, auto-removing file
(function)
(C++17)
returns or sets the current working directory
(function)