From cppreference.com
< c‎ | io
Defined in header <wchar.h>
wchar_t *fgetws( wchar_t *str, int count, FILE *stream );

Reads at most count - 1 wide characters from the given file stream and stores them in str. The produced wide string is always null-terminated. Parsing stops if end-of-file occurs or a newline wide character is found, in which case str will contain that wide newline character.

[edit] Parameters

str - wide string to read the characters to
count - the length of str
stream - file stream to read the data from

[edit] Return value

str on success, NULL on an error

[edit] See also

reads formatted wide character input from stdin, a file stream or a buffer
gets a wide character from a file stream
writes a wide string to a file stream
C++ documentation for fgetws