NAME¶

std::valarray::sum - std::valarray::sum

Synopsis¶

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¶

// Run this code

#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';
}

Output:¶

55

See also¶

apply applies a function to every element of a valarray
(public member function)
accumulate sums up or folds a range of elements
(function template)