print sum of N natural numbers in C++

 #include <iostream>

using namespace std;

// code to print sum of first N natural number

int main(){

    int num;

    cout << " enter num : ";

    cin >> num;

    int sum = 0; // sum initialized at 0, stored at 0

    for(int i = 1; i <= num ; i++){

       

        sum += i;

        cout << sum << " ";

    }

   

    return 0;

}