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std::valarray<T>::size

From cppreference.com
< cpp‎ | numeric‎ | valarray
 
 
Numerics library
 
std::valarray
 
std::size_t size() const;

Returns the number of elements in the valarray.

[edit] Parameters

(none)

[edit] Return value

Number of elements in the valarray.

[edit] 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

[edit] See also

changes the size of valarray
(public member function) [edit]
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