Example 1 at Library

gistfile1.cpp

#include <iostream>

using namespace std;

void refFunc(int &);//Function headers. They do not require a name or body at this point.
void pointerFunc(int *);

int main()
{
  int something = 32; //Declare something as 32.

	cout << something << endl; // Print it.

	refFunc(something); //Pass "something" as reference variable. This is handled by the function arguments.

	cout << something << endl; // Print it.

	pointerFunc(&something); //The & passes the address of the variable instead of just directly passing the variable.

	cout << something << endl; // Print it.

	return 0; //Result to be sent back to the OS once this is complete.
}

void refFunc(int & var) //Note that these much directly match the arguments (at least by type) in the function headers.
{
	var = 64; //No special operators required to set the value.
}

void pointerFunc(int * var)
{
	*var = 128; //The * before the variale on this line de-references it.
				//The argument is the address, and the de-referencing gets the value at the address.
}


//Functionally, reference variables and pointers do the same thing, but reference variables can be easier to read.