29. Reset Fault Buffer

#include <iostream>
using namespace std;

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

    // Write your safe delete + pointer reset logic here
    int* buff = new int(code);
    cout<<*buff;
    delete buff;
    buff = nullptr;
    if(buff==nullptr)
        cout<<" OK";
    else
        cout<<" NOT_OK";
    return 0;
}