29. Reset Fault Buffer

#include <iostream>
using namespace std;

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

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

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

    return 0;
}