std::basic_istream<CharT,Traits>::gcount
From cppreference.com
< cpp | io | basic istream
| std::streamsize gcount() const; |
||
Returns the number of characters extracted by the last unformatted input operation, or the maximum representable value of std::streamsize if the number is not representable.
The following member functions of basic_istream change the value of subsequent gcount() calls: