std::basic_istream::gcount
From cppreference.com
< cpp | io | basic istream
| std::streamsize gcount() const;
|
||
Returns the number of characters extracted by the last unformatted input operation.
The following member functions of basic_istream change the value of subsequent gcount() calls:
The following functions set gcount() to zero:
[edit] Parameters
(none)
[edit] Return value
The number of characters extracted by the last unformatted input operation
[edit] Example
Run this code
#include <iostream> #include <sstream> int main() { char x[20]; std::istringstream stream("Hello World"); stream.read(x, sizeof x); std::cout << "Characters extracted: " << stream.gcount(); }
Output:
Characters extracted: 11