valarray::sum


public member function
T sum() const;

Return sum of elements

Returns the sum of all the elements in the valarray as if calculated by applying operator+= to a copy of one enelement and all the other elements in an unspecified order.

The use of this member function requires that operator+= can be applied to T.

Parameters

none

Return value

The sum of all the elements in the valarray.
T is the template type of valarray (the elements' type).

Example

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// valarray::sum example
#include <iostream>
#include <valarray>
using namespace std;

int main ()
{
  int init[]={10,20,30,40};
  valarray<int> myvalarray (init,4);
  cout << "The sum is " << myvalarray.sum() << endl;

  return 0;
}


Output:

The sum is 100


See also

valarray::min Return lowest value (public member function)
valarray::max Return highest value (public member function)
valarray operators Valarray operators (functions)