Reset Fault Buffer

#include <iostream>
using namespace std;

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

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

    cout << *p;

    delete p;

    p = nullptr;

    if (p == nullptr) cout << " OK";
    else cout << " NOT_OK";
    
    return 0;
}

Solving Approach