Fortran Beginner: What is iostat=stat & buf Argument?

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ydonna1990
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Hello. I am a beginner in the Fortran language and I want to know what isotat=stat means.

also what is exactly the "buf argument"?
 

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ydonna1990 said:
I want to know what isotat=stat means

A Google search for "fortran iostat" gave me this page as the first result:

http://www.cs.mtu.edu/~shene/COURSES/cs201/NOTES/chap04/iostatus.html

ydonna1990 said:
what is exactly the "buf argument"?

I don't know what you're asking about here. It might help if you can show us an example.
 
jtbell said:
A Google search for "fortran iostat" gave me this page as the first result:

http://www.cs.mtu.edu/~shene/COURSES/cs201/NOTES/chap04/iostatus.html
I don't know what you're asking about here. It might help if you can show us an example.

Thanks for the reply.

if (userdefine==0) then

open(100,file='COORD.DAT',iostat=stat)
if(stat==0)then
read(100,'(a)',iostat=stat)line
read(100,'(a)',iostat=stat)line
if ((line(1:2)/='--').and.(line/=' ').and.(line(1:5)/='COORD'))then
 
ydonna1990 said:
if (userdefine==0) then

open(100,file='COORD.DAT',iostat=stat)
if(stat==0)then
read(100,'(a)',iostat=stat)line
read(100,'(a)',iostat=stat)line
if ((line(1:2)/='--').and.(line/=' ').and.(line(1:5)/='COORD'))then

Where is the "buf argument"? That's what I was asking about.
 
jtbell said:
Where is the "buf argument"? That's what I was asking about.

SUBROUTINE ConProdOpt(Iphi_in,Ilnkx_in,Ilnky_in,Ilnkz_in,FirstRun_in,Neindx_in)
IMPLICIT NONE
INTEGER,buf ::Iphi_in,Ilnkx_in,Ilnky_in,Ilnkz_in,FirstRun_in

I saw it everywhere earlier but for some reason I can't find it and now I can only find this one.
 
ydonna1990 said:
INTEGER,buf ::Iphi_in,Ilnkx_in,Ilnky_in,Ilnkz_in,FirstRun_in

The '::' looks like Fortran 90 (or later). I'm not very familiar with those versions of Fortran, so someone else had best answer this part of your question.

iostat was used in Fortran 77 (possibly earlier) which is what I'm familiar with.
 
jtbell said:
The '::' looks like Fortran 90 (or later). I'm not very familiar with those versions of Fortran, so someone else had best answer this part of your question.

iostat was used in Fortran 77 (possibly earlier) which is what I'm familiar with.

Ah ok. Thanks anyway