#6.3 Kotlin for Android WHILE Loop Video Lecture - Kotlin Tutorial

let us of reseed and check out the while
loop in case of Kotlin now the syntax of
while loop is pretty simple so for the
while loop you just need to use while
followed by bracket open and bracket
closed now inside this you have to
simply define the condition right such
as I is smaller than let's say 10 or I
is smaller than equal to 10 now what is
I I is a counter variable that will help
you to continue with the loop till this
condition becomes false so we have to
simply initialize the I value so here I
will simply initialize the counter
variable I let's say I equal own int
equal to let's say 1 inside the while
loop what I will do I will simply try to
print all the values let's say print
print line print the value of I write so
this is the syntax of while loop now at
the end let us increment the value of I
by using the unary operator of I plus
plus and now let us run the code and
let's see the output so here we go in
the output we get 1 2 3 4 5 6 7 8 9 and
10 now suppose if I ask you to write a
program to print all the even numbers
starting from 1 till 10 so what to do in
that case so here what I will do I will
simply write our if condition let's say
if I modulus 2 is equal to equal to 0
then in that case simply print the value
and finally increment the counter by 1
right so let us now run our code so here
we get 2 4 6 8 and 10 so this was all
about the while loop in case of
Cortlandt and now if you are a beginner
in case of programming then please watch
this video otherwise if you know how
does the while loop works then simply
jump onto the next video right so as a
beginner please watch this video now
what is the syntax of while loop so here
while the condition and then we put our
code here and then increment or
decrement our counter variable so this
is the syntax of while loop now let us
see an example on the left hand side so
he
I have the counter variable I int equal
to 0 now I have a while loop within
which I have some condition I is smaller
than 3 now if I is smaller than 3 then
only execute the code present inside the
loop and simply print hello right now at
the end let us increment the counter
value to let's say by 1 by simply using
I plus plus now how does the while loop
work now if you run this code then it
will simply print hello three times in
the output by using loop 1 loop 2 a loop
3 as usual and at the end the loop will
terminate right so the control flow for
the while loop is like this first we
check the condition and then execute the
code and then increment the counter so
when the first loop is executed the
value of I is actually 0 so 0 is smaller
than which is actually true so it will
simply print hello in the output console
and at the end it will simply increment
the counter value by 1 so I will become
now when write with the help of this I
plus plus now this value of I equal to 1
will now appear at the very initial
point of the loop 2 where the condition
will be checked 1 is smaller than 3
which is again true again print hello in
the output console and then I plus plus
and finally I becomes 2 now this value
of I dad is 2 again comes in the third
loop where the condition again becomes
true because 2 is smaller than 3 right
and again we will print hello I plus
plus then again at the end of the loop I
becomes 3 now here comes the twist since
I becomes 3 so this will again try to
initiate the fourth loop where the
condition will actually become false
because 3 is not smaller than 3 right so
the condition becomes false and the loop
terminates and we get only 3 times
hello in the output console so this is
how the while loop works in case of cot
length