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

NAME
     std::deque::size - std::deque::size

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

	Returns  the number of elements in the container, i.e. std::distance(be-
     gin(), 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::deque:

     // Run this code

      #include <deque>
      #include <iostream>

      int main()
      {
	  std::deque<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)
	resize	 changes the number of elements stored
		 (public member function)
	size
	ssize	 returns the size of a container or array
	(C++17)  (function template)
	(C++20)

http://cppreference.com 	   2024.06.10		     std::deque::size(3)
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