Perl Tutorial - 35: Arithmetic Operators Video Lecture | Perl Building Blocks: An Introduction to Perl - Back-End Programming

hello guys welcome to my channel this is
the 35th tutorial in this course and in
this we told we'll be talking about
arithmetic operators in Perl so to
demonstrate the earth Matic operators
that we have I have created a script
that's called a thematic dot PL and in
this script on line number three I have
feared a scalar variable X which has a
value eight and on line number four I've
created another scalar variable Y which
has the value five so both the scalar
variables are initialized and then there
are a bunch of operations that we're
going to perform using these two scalar
variables we're going to add them
subtract them multiply them divide them
you're also going to find the remainder
when you divide one number by another
and we're also going to see how we can
compute the power of one number raised
to another so there's a you know plenty
of code in the script and you know I'm
first going to compute a result value
and then I am going to use print
statement to display the output so on
line number six I have created a
variable called our es short form for
result and in this variable I'm going to
store the result of addition of X&Y and
in Perl you add numbers using the
addition symbol or the plus symbol and
once the value is stored in this we are
going to print it using print so on line
number seven I have a print statement
which is first going to display the text
result of prediction and then it's going
to display the value that's been stored
in our es and then on line number nine I
am subtracting the value of y from X and
this is done using the minus symbol or
the - or the - and you just have to type
door X - dollar Y the value will be
stored in a result and then on line
number ten I have a print statement
which is first will display text result
of subtraction and then it's going to
display the value in our yes similarly
to multiply you use the astrick symbol
and to divide you use the slash so in
both cases we
storing the results in result first and
then we are using print statements to
display the output now to find out the
remainder when you divide a number with
another you use the percent operator in
Perl and we've talked about this earlier
in this course I'm just refreshing your
memory so if suppose you want to see
what is the remainder left when you
divide it by five we know the answer is
3 because 5 times 1 is 5 and you know 8
is not perfectly divisible by 5 so you
would get a remainder of 3 and that
output is obtained using the percent
operator so you type door x percent
dollar Y and then I have a print
statement on line number 19 to display
the obtained value and then finally for
exponentiation or for raising a number
to some power you use the asterisk
symbol twice right so in some
programming languages you would have the
hat you know that's the symbol that you
get when you shift up on key 6 on most
keyboards but in Perl they use the
asterisk symbol twice to get the job
done so if suppose you want to see 8
raised to the power 5 then you could
simply type dollar x then to aspect
symbols and then dollar Y and then I
have a print statement to show the
output from that as well so I'll make
sure this file saved then I'll press f5
to show you the output so the result of
addition of 8 and 5 is 13 subtractions 3
multiplication is 40 result of division
is 1.6 the remainder as I said is 3 and
then 8 raised to the power 5 is 32,768
so that's it about arithmetic operators
in Perl I hope you guys had fun watching
this video I'm going to see you in the
next video till then take care