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

NAME
       std::valarray::size - std::valarray::size

Synopsis
	  std::size_t size() const;

	  Returns the number of	elements in the	valarray.

Parameters
	  (none)

Return value
	  Number of elements in	the valarray.

Example
       // Run this code

	#include <iostream>
	#include <valarray>

	int main()
	{
	    std::valarray<double> a = {1, 2, 3,	4, 5, 6, 7, 8, 9, 10};
	    std::cout << "Average: " <<	a.sum()/a.size() << '\n';
	}

Output:
	Average: 5.5

See also
	  resize changes the size of valarray
		 (public member	function)

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

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