Reading one character
---------------------

   Use these methods to read a single character from the input stream:

 - Method: int istream::get ()
     Read a single character (or `EOF') from the input stream, returning
     it (coerced to an unsigned char) as the result.

 - Method: istream& istream::get (char& C)
     Read a single character from the input stream, into `&C'.

 - Method: int istream::peek ()
     Return the next available input character, but *without* changing
     the current input position.