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Hi, everyone

I'm new to fortran. From an online tutorial I've found the following
code example:

Integer I, n, sum

sum = 0
do 10 i = 1, n
sum = sum + i
write(*,*) 'sum=', sum
10 continue
stop
end

When I compile this function with g77 loop.f, the error comes out:
sum = 0 ( there's a small arrow under 's')
End of source file before end of block started at (^)

Does someone know how to deal with it?

Thanks a lot

Hello,

Compilation of the following test code

PROGRAM test_cmplx
! Double precision
INTEGER, PARAMETER :: dp = SELECTED_REAL_KIND(15)
! Variables
COMPLEX(dp) :: z
REAL(dp) :: x, y
! Assign a value to the complex number
z = CMPLX(3.14159_dp,-0.12345_dp,dp)
PRINT *, z
! Split out the parts
x = REAL(z,dp); y = AIMAG(z)
PRINT *, x, y
END PROGRAM test_cmplx

on an IBM P6 using the AIX v11.1 xlf95 compiler with the -qlanglvl=95pure switch produces
the output:

FYI, here are some comments from the MATLAB newsgroup about Fortran:

(begin quote)

There is one sole reason for teaching (and learning) Fortran
these days: To be able to read and understand old code, in
order to port the algoprithms to some other language.
The fortran language as such is obsolete.

Not quite true. The reason Fortran is fast is that it
lacks dynamic memory management (that was added in
fortran 90 or 95, a mere 15 years ago). Everything is
easy once the memory maps are fixed at compile time.

Hello

I know that there is a bunch of threads on the subject but I don't
seem to get the rirght way of coding a specific code for my problem.

Here is the cvs dat format (too many to change format)

5,01/02/2008 15:00:00,01/02/2008 15:00:00, 29.48, 1298, 329.6
5,01/02/2008 16:00:00,01/02/2008 16:00:00, 29.38, 1265, 313.28
5,01/02/2008 17:00:00,01/02/2008 17:00:00, 28.25, 1199, 271...

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Hi all,

ifort and gfortran compile the following without complaining:

$ cat mtest.f90
module mtest
implicit none
character(len=5), parameter :: test(5) =
["tan","atan2","atan","sin","asin"]

end module mtest

Not so with g95:

$ g95 -c -o mtest.o mtest.f90
In file mtest.f90:3

character(len=5), parameter :: test(5) =
["tan","atan2","atan","sin","asin"]
1
Error: Element in character array constructor at (1) has length 5
instead of 3

I am running a very large program--an implementation of the Land
Information System--on a Linux cluster (1 processor) using Intel
Fortran 90. I am getting an overflow error with the following
message.

7200.000 3.0411966E+07 6.5823113E+10
7200.000 3.0402494E+07 6.5785352E+10
7200.000 3.0392248E+07 6.5744241E+10
7200.000 3.0386762E+07 6.5722331E+10
7200.000 ...

I am trying to compile a fortran 90 code (snippet):

include 'netcdf.inc'
!Open file and check for error
print *, "Open ", filename, "for NetCDF reading"
status = NF_OPEN(filename,0,ncid)
if (status /= NF_NOERR) then
print *, ' --! ERROR: Problem opening ', ADJUSTR(filename)
stop
endif
print *,"---Done"

with netcdf.inc containing:
integer nf_open
! (character*(*) path,
! integer mode,
! integer ncid)
external nf_open

On compiling I get the error:
In function `crefcell_mp_crefextract_.':
test1.f90: undefined reference to `nf_open_'

I have a Fortran program that I would like to implement a GUI with. In
doing a little reading around the net it seems that I will probably
want to call a different programming language such as C++, Java, or
Python. Starting out the GUI will be really simple: something like
"You are running blah blah blah. Continue?" --- with yes and no
buttons. If things go smoothly the GUI could get considerably more
complex.

My question: is this feasible? If so what would be the best language
to do this with? I know nothing about C, C++, or Java, but I know a
little Python. Or is there something else that would be better? Are
there any good books or online references on interfacing two different
languages (one of which being Fortran)?

Thank you!