xsgetn(s, count)of the most derived class.
countcharacters from the input sequence and stores them into a character array pointed to by
s. The characters are read as if by repeated calls to sbumpc(). That is, if less than
countcharacters are immediately available, the function calls uflow() to provide more until traits::eof() is returned.
The number of characters successfully read.
|This section is incomplete|
Reason: no example
| invokes xsputn() |
(public member function)