Fortran Programming Tutorials (Revised) : 002 : More on other Compilers + Hello World Program Video Lecture | Introduction to Fortran Programming (Basic Level) - Database Management

hello guys my name is Errol and welcome
to my channel this series is a series of
tutorials on Fortran programming now in
the last tutorial we saw how to install
Fortran and the required editors to
start a startup program okay in this
tutorial we start with write our first
first photon program before I go with
that I have either
I thought of explaining with just one
more concept this is regarding another
Fortran compilers available okay see the
reason why we scored blocks is because
it has a both GNU it has it supports gnu
compiler c c++ water and other compilers
it does both compiler and editor inbuilt
and it's good for us very making small
projects and it's very very good for
beginners but there are it does not
allow some compiler flag insertions it
has its own company flag insertion
working principles and it may not allow
us to you know you know give the indian
Allah give us inner freedom to modify
the compiler flags and all stuff this is
this has to be checked but this works
pretty fine and there's a reason why he
is giving photon because it is very
simple three free open source and easy
to use and has almost all the standard
features of the Fortran library okay and
if you guys doing just small jobs are
reasonably pretty jobs mean not very
very very small most of you guys for
most of our practical applications
gfortran alone will be such a photon a
sufficient this is good for beginners
and learners and even advanced users can
use it and the thing is a good thing
about giving Fortran is a gfortran
okay if you learn this version the
learning of other versions becomes easy
because this is the easiest one to
follow by the way there are other
versions a photon also like Intel PG
i-clay nag HP and all what they do is
that these Fortran photon compilers are
essentially the same for time except
that they have a little but they have a
little more features they call it the
non-standard features
okay that may not be available in the
standard basic version of the standard
basic definitions of Fortran but the
standard non standard versions help in a
certain way that depending on the
application and also you guys notice
these are all software with the mean
Intel is micro processor manufacturer
your all your all your Pentium core
processors and you know I 7 I generation
process I know all the processors are
made by them PGA cray HP a computer
manufacturers so especially some some
other man with supercomputers also
especially PG and clay nog I sorry I
have I service you Hannes you don't know
what exactly they do but I do her heard
that nag nag provides some very good
quality compilers also ok
these compile these command companies
take use of the system architecture
present in this present in the lab
systems to you know to make the
program's run the Eva more efficiently
and faster ok in for instance in to guys
know how how the processes work and all
based on that information they could
they make an you know make a lot of
other corrections to it they can make
lot of corrections to it and using the
advantages of the processor they can
make the program run little more faster
or the cut down memory and stuff I mean
those that is what the advantage FC than
advertised I'm saying saying may begin
with Fortran on the other hand may not
take up these I take this advantageous
and stuff and all ok that's the
difference but if you guys want to go
for extremely hyper high level
calculations and the heavy duty
computational dog it is recommended you
guys take any one of these and proceed
with but it's not mandate it's just
optional in the in the case if you want
to use you can guys can go ahead and use
it
and the there are only one there's only
one issue with it these comparisons that
they are reasonably priced some are they
they do they have some three versions
but some of them are reason
priced which you know some people might
not like it but all the other hand you
know photon is free so it's good to
start with also and I don't recommend
this for small jobs even you can do
small jobs but this is these companies
especially like I mean that common offer
very advanced and complex complex
processes you know okay and they have
features that can make these comparisons
that make it compatible with the other
kajada programs with the same compiler
for instance for same company for
instance Intel Fortran has features to
run run alongside Intel C or Intel CUDA
in us in a in a nice man very Intel
based CUDA I think and some other
programming languages very nicely
powered all of them come under inter
like that but thing is the one caution
him to keep followers do not mix and
match these compilers meaning if you are
using some could have some compile some
features from for Intel some features
from clay and some features from PGI
okay if the yoga system the program may
not work at the same time if you suppose
if you have a genome Fortran program
okay this will work in Intel PGI Cray
more or less nicely but if you guys want
to use these features these prog
programs that specifically running these
it may not work in other compilers
because of the compiler compiler fil
process compiler the way in which the
comparison decide for optimization
system architecture and all the
non-standard features they can disturb a
lot so what do you do have to do is that
either do not mix and match these
compilers or do them very carefully or
else you might end up with different
different results okay now enough of
this introduction with this may come
play completely through with our
introduction we will go to a writer
first Fortran program okay what do you
guys can do is open your core blocks I
kept my I kept an icon here okay
depending on the operating system you're
using the view might be slightly
different
okay what I do is that is create a new
here I just get a new project in that
project what I do is
I said this to Fortran you have these
options click this Fortran application
and click go and it will show up a
project wizard click Next
yeah i'll be--i'll keep this here you
have to set a folder where to where I
had to write your project I already have
a folder so no problem I just say this
say this I'll just name this hello and
the product name will be how I gave the
title to be hollow and the project name
will be hello dot CPP or core Blox
project click Next and in this here in
this position place set the compiler to
be gained new Fortran compiler gaining
Fortran comparing out this not any of
these giving Fortran compiler and make
sure these two options are checked and
click finish and it just pops up a black
window but doesn't matter is if you look
at this photon sources you will find a
file called as main dot F 95 double
click this but you already have a
program written or written in it by
default okay to make sure this works
fine clip click this build button ok it
should show no warnings no errors like
this let me just raise the screen for
you guys yeah it should show no warnings
no errors not like that and then run
this yeah it should so this hollow world
stuff over here they ignore this for for
the worse or nope nothing to matter ok
yeah you know let's write our own
program ok now let's start with the
comment if you want to write a comment
and no Fortran you have to use you have
to use the exclamation symbol and then
start writing this program is a hello
world program ok now comments are very
useful if you want to give a lot of
information to the cont information to
the user and the reader who's reading
was going through the program and
comments are just ignored and whatever
you right after the exclamation symbol
just gets ignored by
compiler okay and so this this can be
used for both features to ignore line
certain lines in a program and for
giving kind of information okay
as a basic photon the photon program
starts like this you have to have to
type the keyword program and then what
you have to give you have to give the
program name this may not identify is
the file name whereas whatever you type
here is the program name why I gave the
name hello program hallo okay and then I
end the program with the command end
program
hello okay this program name is kind of
mandatory it's not mandatory but it's
option which is always a good practice
to follow then we have to write this
keyword called statement call is
implicit none okay I will explain you
guys in the next tutorial as to what
this implicit none means as I will just
follow with me and to print to print
hello world what you do is they use the
print command then followed by a star
and the comma and then type hello world
hello world my name is you guys read
your reg I cite your name okay and then
once this is done what do you guys can
do is you can either click this yellow
gray yellow color gear button here or
else what you can do is this code to you
know build options and click the build
build here so what I prefer what I
prefer is I prefer this option more easy
you know build this okay now run this
file now build what building distances
goes through the file compiles it and
make sure the everything was working
fine and then creates a lot of object
files build and also publish files from
the object files and appeared in
executable when you click the Run button
over here ill execute it'll execute like
the execute the you'll start the
execution file executable file and then
opens up a terminal like this and since
our program is right we get this car we
get this in message helloworld but fine
and if you guys if you guys wrote your
name it'll say that my name is Lex T my
name is like Whitney H or something like
that okay and that's a click enter and
this gets close congratulations guys you
have finally successfully completed a
first program in Fortran programming in
the next tutorial or in the next
tutorial onwards we will jump into a
little more serious programming stuff
and I promise you guys to make this
video sessions much more interesting and
exciting as possible so thank you guys
for watching see you guys in the next
video next video