CONTROL STATEMENTS:
===================

sequential execution

program:
	line-1
	line-2
	line-3

Why?
====
1) to make execute the specific block of the code/program
2) to make execute the block of code repeatedly for certain number of times.
3) to jump from one block of code to another block.

=> three types:
	1) Conditional Statements
	2) Looping Statements
	3) Transfer Statements

Conditional Statements
======================
==> also called as "selection statement".
	simple if
	if else statement
	nested if else
	if else if else ladder

simple if
=========
Syntax:
	if(condition)
	{
		if block
	}
	Statements;

// WAP TO CONVERT THE NUMBER TO POSITIVE IF IT IS ENTERED AS NEGATIVE.

let n = -12;

if(n < 0)
{
    // converting into positive
    n = -n;
    console.log("The Value after the sign change = "+n);
}
console.log("The Number = "+n);
====================================
if-else:
========
Syntax:
	if(condition)
	{
		if block
	}
	else
	{
		else block
	}

// WAP TO CHECK WHETHER WE CAN ABLE TO MAKE THE SQUARE WITH THE GIVEN FOUR INTEGER VALUES OR NOT.

var s1 = 10;
var s2 = 11;
var s3 = 10;
var s4 = 12;

if(s1 == s2 && s1 == s3 && s1 == s4)
{
    console.log("It is a Square.");
}
else{
    console.log("It is not a Square.");
}

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

// WAP TO CHECK THE YEAR IS LEAP YEAR OR NOT.

year = 1999;

// year % 4 == 0
// year % 100 != 0
// year % 400 == 0

if((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0))
{
    console.log("This is a leap year.");
}
else
{
    console.log("This is not leap year.");
}
===========================================

// WAP TO FIND THE DIFFERENCE OF TWO NUMBERS IF FIRST NUMBER IS GREATER THAN THE SECOND OTHERWISE FIND ITS SUM.

/*
n1 > n2 ==> n1 - n2
n1 < n2 ==> n1 + n2
*/

n1 = 12;
n2 = 10;
var result = 0;

if(n1 > n2)
{
    result = n1 - n2;
}
else
{
    result = n1 + n2;
}
console.log("The Result = "+result);
==========================