Calculate sum of elements in a vector : accumulate « STL Algorithms Helper « C++ Tutorial

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C++ Tutorial » STL Algorithms Helper » accumulate 
32.3.1.Calculate sum of elements in a vector
#include <iostream>
using std::cout;
using std::endl;

#include <algorithm>
#include <numeric>
#include <vector>
#include <iterator>

int main()
{
   std::ostream_iterator< int > outputcout, " " );

   int a210 10028150388910 };
   std::vector< int > v2a2, a2 + 10 )// copy of a2
   cout << "\n\nVector v2 contains: ";
   std::copyv2.begin(), v2.end(), output );

   // calculate sum of elements in v
   cout << "\n\nThe total of the elements in Vector v is: "
      << std::accumulatev2.begin(), v2.end());

   cout << endl;
   return 0;
}
Vector v2 contains: 100 2 8 1 50 3 8 8 9 10

The total of the elements in Vector v is: 199
32.3.accumulate
32.3.1.Calculate sum of elements in a vector
32.3.2.Algorithm: Use accumulate to calculate product
32.3.3.Demonstrating the generic accumulate algorithm with a reverse iterator
32.3.4.Illustrating the generic accumulate algorithm with predicate
32.3.5.The total of the elements in a vector
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