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)