Geeksforgeeks Solution For " Sum of array elements "

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Problem :- Given an integer array, find sum of elements in it.

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Solution :- 

#include <iostream>
using namespace std;
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
       int i,n,sum=0;
       cin>>n;
       int arr[n];
       for(i=0;i<n;i++)
       cin>>arr[i];
       for(i=0;i<n;i++)
       sum+=arr[i];
       cout<<sum<<endl;
       
    }
    return 0;
}

Output:-