29. Reset Fault Buffer

#include <iostream>
using namespace std;

int main() {
    int code;
    cin >> code;

    // Write your safe delete + pointer reset logic here
    int *ptr = new int(code);

    cout << *ptr << " ";

    delete ptr;

    ptr = nullptr;

    if(ptr == nullptr){
        cout << "OK";
    }
    else{
        cout << "NOT_OK";
    }

    return 0;
}