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std::basic_istream::gcount

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< cpp‎ | io‎ | basic istream
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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:

Contents

[edit] Parameters

(none)

[edit] Return value

The number of characters extracted by the last unformatted input operation

[edit] Example

#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

[edit] See also