std::bitset<N>::size

std::size_t size() const;

constexpr std::size_t size() const noexcept;

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

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

1024

See also