std::valarray<T>::sum (3) - Linux Man Pages

std::valarray<T>::sum: std::valarray<T>::sum

NAME

std::valarray<T>::sum - std::valarray<T>::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


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