sum vector c++

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

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4

2

Yossi Farjoun 65 points

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

Thank you! 2

4 (2 Votes)

0

0

0

R.Andrew 110 points

                                      vector&lt;int&gt; 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&amp; i : v) sum+=i;

Thank you! 0

0

0

3.8

5

Jobelle 85 points

                                    //Syntax
accumulate(first, last, sum);
accumulate(first, last, sum, myfun); 

first, last : first and last elements of range 
              whose elements are to be added
sum :  initial value of the sum
myfun : a function for performing any 
        specific task. For example, we can
        find product of elements between
        first and last.
//Example
  int a[] = {5 , 10 , 15} ;
  int res = accumulate(a,a+3,0); // 30

Thank you! 5

3.8 (5 Votes)

0

3.67

9

Roger Hughes 80 points

                                     // Sum digits in vector
int digit_sum(vector&lt;int&gt; num) {
    int sum = 0;
    for (auto x : num) sum += x;
    return sum;
}

Thank you! 9

3.67 (9 Votes)

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