How to call a value on pointer #CHUPETINVASACAER

#include<iostream>
#include<ctime>
#include<cstdlib>
using std::cout;
using std::endl;
using std::cin;
void main() {
    int n = 5;
    int *arr = new int[n];
    for (int i = 0; i < n; i++)
    {
        arr[i] = rand() % 10;
    }
    for (int i = 0; i < n; i++)
    {
        cout << arr[i] << " ";
    }
    cout << endl;
    cout << arr[4] << *(arr + 4) << 4[arr] << endl;
    cin.ignore(), cin.get();
}