(GEEKSFORGEEKS)Sum of elements in a array.cpp

#include <iostream>
using namespace std;

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