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Sum elements in vector c++

Sum of elements in c++ stl

accumulate(a.begin(), a.end(), 0)

7

Sum vector c++

  vector<int> v{1,2,3,4,5,6,7,8,9};
  int sum = 0;
//Method 1:
  sum = accumulate(v.begin(), v.end(), 0);
//Method 2: 
  for(auto& i : v) sum+=i;

1

Sum elements in vector c++

for (auto& n : vector)
    sum_of_elems += n;

0

Source: stackoverflow.com

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