Operators:
==========
Decrement Operators:
===================
--
Can decrease the value by '1'
==> can define in two ways:
	1) Pre-Decrement Operator
	2) Post-Decrement Operator

Pre-Decrement Operator
======================
Syntax:
	--operand

1) Decrease the value by '1'
2) Assignment

Post-Decrement Operator
=======================
Syntax:
	operand--

1) Assignment
2) Decrease the value by '1'

// Pre-Decrement Operation

var a = 100;

console.log("the value of a = "+a);

--a;
console.log("The value of a after the pre-decrementation = "+a);

const b = --a;

console.log("value of a = "+a+" value of b = "+b);

a--;
console.log("a = "+a);

let c = a--;
console.log("value of a = "+a+" value of c = "+c);


====================================
a = 10

a++ + ++a - a-- + --a
10 + 12 - 12 + 10
22 - 12 + 10
10 + 10
20

a = 11
a = 12
a = 11
a = 10

	 0 + 0 -  0	+ 0
9 + 9 - 9 + 9
18 - 9 + 9
9 + 9 
18

a = 9
a = 8
a = 9
a = 10

++, -- ==> Higher order
+, - ==> Lower Order

a = 0
a = -1
a = 0
a = 1

==================================
Relational Operators:
=====================
==> Comparison Operators
==> return values: Boolean values (true/false)
	<	==> less than
	>	==> grater than
	<=	==> less than or equals to	
	>=	==> greater than or equals to 

x, y and z
x with y
x with z
y with z

let a = 10;
let b = 20;

console.log("a is less than b :"+(a < b));
console.log("a is greater than b :"+(a > b));
console.log("a is less than or equal to b :"+(a <= b)); // <= ==> a < b or a == b
console.log("a is greater than or equal to b :"+(a >= b));

console.log((a + b - 2) == (a -b + 2));
======================================================
Logical Operators:
==================
==> three:
	1) Logical and ==> &&
	2) Logical or ==> ||
	3) Logical not	==> !

Note:
====
we can use the logical operators with any value.

a	b	a && b		a || b		!a	!b
===========================================================
true	true	true		true		false	false
true	false	false		true		false	true
false	true	false		true		true	false
false	false	false		false		true	true

Note:
=====
1) When the first input (left hand side) is true (non-zero)
	logical and (&&) can return an output ==> second operand value
2) When the first input is false/0
	output ==> false/0

console.log(true && true);
console.log(true && false);
console.log(false && true);
console.log(false && false);

console.log(100 && 200);    // 200
console.log(0 && 100);  // 0
console.log(-1 && -2);  //-2
console.log(100 && -1); //-1

console.log(-100 && 0);
console.log(-100 && false);
console.log(-100 && true);

==========================

console.log(true || true);
console.log(true || false);
console.log(false || true);
console.log(false || false);

// if first input ==> true/non-zero, output ==> true/non-zero (first operand) (without decoding the second operand)

console.log(true || 100);
console.log(100 || true);

// if the first input ==> false/0, output ==> second operand
console.log(0 || 100);
console.log(false || 0);

=========================================

console.log(!true);
console.log(!false);

console.log(!100);