x = None

print(x)

print(type(x))

​

#Python

const x = null;

console.log(x);

console.log(typeof x);

​

//JavaScript

public class Main {

  public static void main(String[] args) {

    String s = null;

    System.out.println(s);

  }

}

​

//Java

#include <iostream>

using namespace std;

​

int main() {

  // In modern C++ (C++11 and later), we use nullptr for pointers that don't point to anything.

  int* ptr = nullptr;

  if (ptr == nullptr) {

    cout << "ptr is nullptr (null)";

  }

  return 0;

}

​

//C++