#3.2 Kotlin Basic Syntax Variables and Data Types Video Lecture - Kotlin

and now here within the print function
we are directly printing the hello world
string right now suppose if I want to
define a string then what is the syntax
to define a variable or some string
value within the main method so for that
we have to use the keyword of VAR space
let's say my string and then equal to
let's say hello void right now here
inside the print method simply pass my
string and then run the code so in the
output we get hello world right so in
case of Cortland we define any variables
with this keyword of that now suppose
you want to make it let's say my number
let's say equal to 10 and now simply
pass my number here now whatever value
that you define here determines the data
type of this variable right so here this
my number automatically becomes integer
value now similarly where space my
decimal value equal to let's say 1.0 so
this my decimal variable simply becomes
a floating point value right now suppose
as for example you want to define
variable space let's say my string and
now suppose you don't want to initialize
your string variable here so for that
what you can do you can simply declare
the type of this variable by simply
using the semicolon and use the keyword
of string right and now later on you can
simply define the value of this my
string variable my string equal to let's
say hello world so in this way in just
one statement you define that this is
the variable of the type of string and
later on you decided to initialize it
with this value of hello world now here
this string is actually mutable in
nature that is at any point of time we
can simply modify this variable let's
say my string equal to another world
right so now this value of this variable
has been changed from this hello world
to another world now so
course you want to fix the value of this
variable as hello world only so that
later on nobody can change this value so
for that purpose what you will do you
will simply use the keyword of V Al Val
let's say my another string and then
simply use it to define the value let's
say my constant string right now later
on if you try to modify this my another
string to let's say some other value
hello
then the intelligence IDE will simply
show some error this my another STR
cannot be reassigned to some other
string value because here we are using
the v al keyword so my another string
cannot be modified at any other point
right so here we can say this is our
constant value and now here let us
remove it so here I have simply modified
my comment that it is actually the
immutable string and here it is actually
the mutable string whose value can be
changed later on here or there right