How to sum up elements of a C++ vector?

Sum up of all elements of a C++ vector can be very easily done by std::accumulate method. It is defined in <numeric> header. It accumulates all the values present specified in the vector to the specified sum.

Algorithm

Begin
   Declare v of vector type.
      Initialize some values into v vector in array pattern.
      Print “Sum of all the elements are:”.
      Call accumulate(v.begin(),v.end(),0) to calculate the sum of all
      values of v vector.
      Print the result of sum.
End.

Example Code

#include<iostream>
#include<vector>
#include<numeric>
using namespace std;
int main() {
   vector<int> v = {2,7,6,10};
   cout<<"Sum of all the elements are:"<<endl;
   cout<<accumulate(v.begin(),v.end(),0);
}

Output

Sum of all the elements are:
25