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

NAME

std::multiset::size - std::multiset::size

Synopsis


size_type size() const; (noexcept since C++11)


Returns the number of elements in the container, i.e. std::distance(begin(), end()).

Parameters


(none)

Return value


The number of elements in the container.

Complexity


Constant.

Example


The following code uses size to display the number of elements in a
std::multiset<int>:

// Run this code


#include <iostream>
#include <set>


int main()
{
std::multiset<int> nums{1, 3, 5, 7};


std::cout << "nums contains " << nums.size() << " elements.\n";
}

Output:


nums contains 4 elements.

See also


empty checks whether the container is empty
(public member function)
max_size returns the maximum possible number of elements
(public member function)
size
ssize returns the size of a container or array
(C++17) (function template)
(C++20)

2024.06.10 http://cppreference.com