Write a C++ Program For Calculate Sum of Natural Numbers

#include <iostream>
using namespace std;



int main() {

    int n, sum = 0;
    cout << "Enter a positive integer: ";
    cin >> n;
    for (int i = 1; i <= n; ++i) {
        sum += i;
    }
    cout << "Sum = " << sum;
    return 0;
}

Output

Enter a positive integer: 50
Sum = 1275