CPP

sum of vector c++

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

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;

C++ find sum of vector

#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);
}

sum of vector elements C++

#include<numeric>

vector<int> pack = {1,2,3} ;

int sum = accumulate(pack.begin(),pack.end(),0) ;    ////****

cout << sum ;  	// 6

sum of vector c++

#include <numeric>

sum_of_elems = std::accumulate(vector.begin(), vector.end(), 0);

how to find the sum of a vector c++

#include <numeric>

 sum_of_elems = std::accumulate(vector.begin(), vector.end(), 0);

sum elements in vector c++

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

sum of vector c++

//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

C++ sum a vector of digits

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

sum of vector elemnt in c++

#include <bits/stdc++.h>

using namespace std;

int sum(vector a){
  int ans = 0;
  for(int i = 0; i<a.size(); i++){
  	ans+=a[i];
  }
  return ans;
}

int main(){
  vector<int> a = {1, 2, 3, 4, 5, 6};
  cout << sum(a) << endl;output: 21
  return 0;
}