Protected:
void unbuffered( int nState );
Protected:
int unbuffered() const;
nState
The value of the buffering state variable; 0 = buffered, nonzero = unbuffered.
The first overloaded unbuffered function sets the value of the streambuf object's buffering state. This variable's primary purpose is to control whether the allocate function automatically allocates a reserve area.
The second function returns the current buffering state variable.