std::valarray::sum

T sum() const;

Computes the sum of the elements.

The function can be used only if operator+= is defined for type T. If the std::valarray is empty, the behavior is undefined. The order in which the elements are processed by this function is unspecified.

Parameters

(none).

Return value

The sum of the elements.

Example

#include <iostream>
#include <valarray>
 
int main()
{
    std::valarray<int> a = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
    std::cout << a.sum() << '\n';
}

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See also