Fortran Programming Tutorials (Revised) : 017 : Modulus Operation Video Lecture | Introduction to Fortran Programming (Basic Level) - Database Management

hello guys my name is Aaron and welcome
to my channel this series is a series of
tutorials on Fortran programming now in
the last two last tutorials we guys how
to print how to make use of single
quotes and double quotes in strings and
how to make them get printed in the
print statement and the some details
about character strings and string of
arrays okay and in this tutorial we will
be looking at a slightly different
concept I thought of explain you guys
the different the modulus operation that
happens in the in Fortran
now watch the modulus operator is is
that it's a mathematic operation where
and you where in you get a reminder of a
division okay suppose you would divide
up a different number with another
number you will get a quotient in a
remainder
most of them division just gives only
the quotient as a reminder is left over
okay
but in this division in this modulus
operation the reminder is received okay
what I have is that I have program named
mod underscore e ex dot F 95 and the
programmers program and the that's a
file name of the program is mod
underscore e^x I have the implicit none
ready and let's start writing so what I
did is I managed to know get get some
code that I already wrote in the
previous and Allah wrote in one of the
previous examples and I use the scribble
option that's available genie to take to
write now make a scratch of it and just
to you don't you know take a note of it
so that I can you know use it here so
it's that if this is like some kind of a
handy workspace where and you can type
something or keep something in notes
like that so that's one of the
advantages of G that Genie processes
then come but others it's a kind of not
so big feature but it's worth trying out
okay
and now all I have to do is that you
know I can copy/paste all this but I
just want to know type this out for so
that you guys can follow okay now for
this program I need the for integers
okay D comma a comma Q comma M and you
need a real integer you know I need for
real values a comma B B
come q QR comma M are now being your
integer names that's it then Q and I'm
the Q stands for the quotient M stands
for the divisor and Q R stands for the
real quotient and mr stands for the real
modulus Young's modulus and the a and B
are real numbers okay now what I do is
that I said the value D equals v d
equals 50 and e equals 10
okay so that I can set I can change this
this is and this kind of a setting is
fine because I can change the value of D
any multiple times as per my wish so
that I can know it's easy and you know
in this way I don't have to get didn't
have to know write read statements and
print statements and all to get the
answer from the user because the answers
from the user because this is easy to
follow and then mod function is given by
this y equals mod okay and this function
requires two are precious
operators first the divisor and then the
first that the first the divisor and the
numerator and the denominator of the
denominator okay this is the number that
you have already divided and this is the
number that you have is that you'll be
using to divide okay and that being that
being said okay I repeat the same
process so instead of just typing all
this again now I can just copy all this
because it's you know it's easy and you
know it's just it's not of a big complex
code is just a very simple code so you
know this will work fine but the thing I
want you guys to notice D is set to an
int set to an integer value 50 and Nene
set to another integer value 10 okay and
it's a perfect divisible perfect divisor
so perfect division so Q will be Phi and
M will be zero okay whereas in this case
if you guys notice they set to fifty
point zero four and be set to be 10 so
the division the quotient will be 50
point zero four fifty point five point
zero five point zero zero four now the
model modulus will be point
beautiful now you guys just watch how
this works okay
usually the you guys just watch how this
works to get the values properly I copy
copy of them and I'm print print them
here they get the radish properly okay
now you can just you know call out this
okay and I have the program ready it's
nothing I'm just printing the value D in
the parent e q m ABQ Aramis just like
that okay now what I do is that it's
compiled this build this and run this I
can't get the values now watch this is
where the end this is one into this
let's go become a little interesting now
D is fifty fine ass because mentioned
here is ten fine
q is five D 8 D divided by E so it's
five that's nothing to be a process
nothing interesting about that and M is
actually the reminder operation Marlys
operation and it gets a reminder since
5:50 layer by 10 is a perfect divisor
it's it's a perfect division is reminder
zero and the reminder is getting stored
here whereas in this case a is fifty
point zero four is a getting store like
this
ignore the zero point ignore this nine
at the last is just a computation thing
but it doesn't it won't be a big issue
for you guys okay and B stands for ten
fine quotient is five point zero zero
four and just ignore this point zero at
the last is just some round of issues
there's nothing to worry about
and then the modulus operation returns
point zero four this is actually written
in scientific notation but this is
actually point zero four so what does
this modulus operation does is that it
tries to divide the number again and it
will gives gives a value properly you
serum a gives a reminder properly no
advantage of modulus operator is that as
you guys noticed in these two examples
they give perfect perfect answers okay
and this model this my operation works
regardless of the you know like also the
daily that usually monos operations work
only for integers here it works for
integers and real numbers some both way
but say in the same way
if I were to know it slightly changes
value say 51 si 51 and I remove this
zero off and they put another zero okay
I compile this business and run this
okay I get I get the reminder to be one
because because it's a 1051 their
attendance on the perfect division so
it'll determine give a modulus so it
works fine whereas if you guys notice in
this part 52 attend as a perfect
division so this turns out to be right
and the quotient is Phi and the modulus
is turned out to be zero so this way I
can tell you guys that this works
perfectly fine okay I'll come I will
just write the commented versions out so
you guys can practice that also okay and
then e equals 10 equals 10 yeah this
would be fine this will be fine
and now and a equals if I remember
properly fifty point zero four and then
the B yeah it is B B is the same okay
that's all I fi that's all I have for
you guys in this tutorial I know it's a
very short tutorial the next tutorial
will jump into a little mover of
interesting features and then we'll go
we'll look at some examples to get an
idea of what's going on over there so
thank you guys for watching see you guys
next tutorial