How does istream::operator>>( const char& ) as no such function is implemented?

Question

Looking at istream documentation, you will see that there is no implementation of function istream &operator>>( char& ), but if you compile and ru

Answer 1

As stated here, operator>> is also implemented as non-member-function of cin.

Non-member function :

istream& operator>>( istream& st, char& ch );

There is always the standard stated it explicitly in the section § 27.7.2.2.3 :

27.7.2.2.3 basic_istream::operator>> [istream::extractors]

11/ Returns: in.

    template<class charT, class traits> basic_istream<charT,traits>& operator>>
        (basic_istream<charT,traits>& in, charT& c);

    template<class traits> basic_istream<char,traits>& operator>>
        (basic_istream<char,traits>& in, unsigned char& c);

    template<class traits> basic_istream<char,traits>& operator>>
        (basic_istream<char,traits>& in, signed char& c);

Answer 2

operator>> also is implemented as non-member functions.

istream& operator>> (istream& is, char& c)