C++ :

#include <iostream>
using namespace std;
int main() {
    int n;
    cin >> n;
    int arr[100], prefixSum[100];
    int sum = 0;
    for (int i = 0; i < n; ++i) {
        cin >> arr[i];
        sum += arr[i];
        prefixSum[i] = sum;
    }
    for (int i = 0; i < n; ++i) {
        cout << prefixSum[i] << " ";
    }
    return 0;
}