//THE DIFFERENCE BETWEEN PASSING BY VALUE
//AND PASSING BY REFERENCE///////////////

#include<iostream.h>
//NOTE HOW THIS FUNCTION USES TWO INT VARIABLES, BUT
//THE SECOND ONE IS PRECEDED BY THE & SYMBOL////////
//THE & SYMBOL CREATES A DIFFERENT KIND OF VARIABLE//
//IT PERFORMS A DIFFERENT TYPE OF FUNCTION AS YOU WILL SEE
//////////////////////////////////////////////////////////
void FUNCTION_WITH_REFERENCE(int value, int& reference)
{
	value=100;
	reference=1000;
}

int main()
{
	int a=10,b=11;

	cout<<"Before calling the function: "<<endl;
	cout<<"a = "<<a<<'\n';
	cout<<"b = "<<b<<'\n';
//WHAT HAS HAPPENED SO FAR IS ALL TO BE EXPECTED...
//BOTH "A" AND "B" WERE DEFINED IN THE MAIN FUNCTION
//AND SO WHAT YOU SEE IS WHAT YOU GET//////////////
	FUNCTION_WITH_REFERENCE(a,b);
//THIS IS WHERE WE GET THE TWIST. WE HAVE CALLED THE FUNCTION
//CONTAINING THE REFERENCE VARIABLE AND LOOK WHAT HAPPENS////
	cout<<"After calling the function: "<<endl;
	cout<<"a = "<<a<<'\n';	
	cout<<"b = "<<b<<'\n';
//YOU SEE "b" IS OUTPUT AS 1000, NOT 11 AS IT WAS EARLIER IN
//THE MAIN FUNCTION. THIS IS THE RESULT OF THE VARIABLE
//BEING PASSED BY REFERENCE. GET IT????????????
	return 0;
}