Use the following methods to read a single character from the input stream.
int istream::get () Method
Read a single character (or EOF) from the input stream, returning it (coerced to an unsigned char) as the result.
istream& istream::get (char &c) Method
Read a single character from the input stream, into &c.
int istream::peek () Method
Return the next available input character, but without changing the current input position.