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std::bitset::size(3)	      C++ Standard Libary	  std::bitset::size(3)

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)

http://cppreference.com		  2022.07.31		  std::bitset::size(3)

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