Check null pointer with an assertion [C++]

checkNull.cpp

#include <iostream>
#include <cstddef>
#include <cassert>

using namespace std;

int main(int argc, char *argv[]) {
	
	int * numbers = nullptr; // = new int[3]{1,2,3};

	assert(numbers && "Error, null pointer");
	
	cout << numbers << endl;
	
	delete[] numbers;
	numbers = nullptr;

	cout << numbers << endl; // Check address
}