Question

In C++

1. Create an array using pointers (and pointer notation) and fill it in with random numbers.

Answer 1

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int main() {
    srand(time(NULL));
    int size;
    cout << "How many numbers: ";
    cin >> size;
    int **arr = new int*[size];
    for (int i = 0; i < size; ++i) {
        arr[i] = new int;
        *arr[i] = rand() % 100;
    }
    // print random array of pointers
    for (int i = 0; i < size; ++i) {
        cout << *arr[i] << " ";
    }
    cout << endl;
    // free memory
    for (int i = 0; i < size; ++i) {
        delete arr[i];
    }
    delete[] arr;
    return 0;
}