C++ Pointers and References: Quick Reference

After watching a few hours of an Intro to C++ series on Pluralsight, this is a succinct aide-memoir for myself for C++ pointers and references.

	#include <iostream>
	int main() {
	int ten = 10;
	int fifty = 50;
	int* pointer; // pointers can be null
	pointer = &ten; // they hold memory addresses (&ten = the memory address of variable 'ten')
	pointer = &fifty; // and pointers can be reassigned
	std::cout << pointer << "\n"; // this writes the address pointer holds
	std::cout << *pointer << "\n"; // this writes out the value of the address pointer is pointing to
	int& reference = ten; // references are non-null, assigned-once aliases for other variables
	std::cout << reference; // this is the same as std:cout << ten
	}
	// Output:
	// 0xfff000bcc
	// 50
	// 10

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