basic_streambuf::xsgetn
Protected, virtual function to extract elements from the input stream.
This method is potentially unsafe, as it relies on the caller to check that the passed values are correct. Consider using basic_streambuf::_Xsgetn_s instead.
virtual streamsize xsgetn(
char_type *_Ptr,
streamsize _Count
);
Parameters
_Ptr
The buffer to contain the extracted characters._Count
The number of elements to extract.
Return Value
The number of elements extracted.
Remarks
The protected virtual member function extracts up to _Count elements from the input stream, as if by repeated calls to sbumpc, and stores them in the array beginning at _Ptr. It returns the number of elements actually extracted.
Requirements
Header: <streambuf>
Namespace: std