Perl Tutorial - 38: Assignment Operators Video Lecture | Perl Building Blocks: An Introduction to Perl - Back-End Programming

hello guys welcome to my channel this is
the 38 tutorial in this course and in
this role we'll be talking about
assignment operators in Perl so if you
have an equal to symbol between two
variables in Perl
you are basically assigning the value
that's stored in the variable on the
right hand side of the equation to the
variable that's reading on the left hand
side and you know that's like pretty
obvious and we're doing something like
that in the script that I have opened
here
it's called assignment underscore
operators and in this script I'm
creating a variable scale variable X on
line number three and I am giving it a
value 20 and then on line number 4 I am
creating a variable Y and I'm
simultaneously assigning to it the value
that stored in the variable X so this
operation is known as a simple
assignment operation and we've done this
bunch of times in this course already
then on line number five I have a print
statement that is going to first show
the texts simple assignment it's going
to display a colon and then it's going
to show us the value in Y and we should
get 20 as the output there for the
prints rate and on line number five now
let's say you want to perform some
operations on this variable Y you want
to add a number to it you want to
subtract a number from it multiply it
with something divided by something
calculate the remainder when you divide
it by something maybe and then also
raise it to the power of something and
you know you could do all of your these
things using the arithmetic operators
that we've checked out in you know I
don't remember them the number of that
tutorial but you know it was like two or
three tutorials ago in the playlist or
you could use the shorthand notations
instead of writing the full long forms
using the assignment operators that
we're going to see in this script so
let's say you want to add five to Y you
could either type y equals y plus 5 or
you could simply put the
Plus symbol and the equal to symbol
together the plus symbol before the
equal to symbol and you know just put
the value that you want to add to Y
after the equal to symbol so y plus
equals 5 is equivalent to y equals y
plus 5 and similarly the corresponding
subtraction combination is minus equal
to the multiplication combination is
astrick equal to if you want to divide
the value in Y by 5 then you would use
slash equal to and let's say you want to
see the remainder of the division of Y
by 15 then the statement would be y
percent equals 15 and finally if you
want to raise Y to the power 2 then it
would be y double asterisk equal 2
because this is the exponentiation
operator in Perl right and this would
obviously save some typing time and once
you develop a habit of using assignment
operators and you would never want to
use the longhand notations you would
always want to use the assignment
operators at least I tend to use them as
much as I can and that's I think I
should just show you the output of the
script so for simple assignment we see
the the are plus 20 so 20 has been put
in Y then we are adding 5 to Y so we get
25 then we are subtracting 5 we come
back to 20 then we are multiplying 20 by
5 to get hundred we are dividing hundred
by 5 to get 20 again and then we were
checking the remainder after division by
15 so that would be 5 and then finally
we were raising the value in 5 to the
part 2 to get 25 5 square is 25 so
that's it about assignment operators in
Perl I hope you guys had fun watching
this video you may subscribe to my
channel if you haven't already I am
going to see you in the next tutorial
till then take care