Reset Fault Buffer

#include <iostream>
using namespace std;

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

    return 0;
}

Solving Approach