Reset Fault Buffer

#include <iostream>
using namespace std;

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

    // Write your safe delete + pointer reset logic here
    int* dt = new int;
    *dt = code;
    cout << code << " ";
    delete dt;
    dt = nullptr;
    if(dt){
        cout << "NOT_OK";
    } else{
        cout << "OK";
    }

    return 0;
}

Solving Approach