Reset Fault Buffer

#include <iostream>
using namespace std;

int main() {
    int code;
    cin >> code;
    int* ptr = new int;
    *ptr = code;
    cout<<*ptr<<" ";
    delete ptr;
    ptr = nullptr;
    cout<<((ptr==nullptr)?"OK":"NOT_OK"); 
    // Write your safe delete + pointer reset logic here

    return 0;
}

Solving Approach