cpp/filesystem/current path

Returns or changes the current path.

@1-2@ Returns the absolute path of the current working directory, obtained as if (in native format) by POSIX. returns if error occurs.

@3-4@ Changes the current working directory to, as if by POSIX.

Return value
@1-2@ Returns the current working directory.

@3-4@ (none).

Exceptions
@1-2@

@3-4@