std::valarray<T>::size
From cppreference.com
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
| changes the size of valarray (public member function) |