NAME

std::bitset::size - std::bitset::size

Synopsis

std::size_t size() const; (until C++11)
constexpr std::size_t size() const noexcept; (since C++11)

Returns the number of bits that the bitset holds.

Parameters

(none)

Return value

number of bits that the bitset holds, i.e. the template parameter N.

Example

// Run this code

#include <bitset>
#include <iostream>

int main() {
std::cout << std::bitset<0x400>().size() << '\n';
}

Output:

1024

See also

count returns the number of bits set to true
(public member function)