Thread: Passing parameters to a module

OK - here we go -
I have a call to the function
collectstat(fp);

Code:

???? collectstat(FILE *fp, name_type in_file) {
                if (access(in_file,0) == 0) {
                stat(in_file, &file_info); }
                return(file_info); }
                }
}

If I stat the file into the struct stat file_info - what is the syntax to return the struct and then later to pass it to another function?

I made the struct "static" - hoping it would be there on my return - but it is not - so I will have to pass it back to the calling pgm and then later into the writedata function.

Thanks
Sue

Interesting that my stat'd file_info (even though) a static - does not remain between calls....

I am trying to confirm that that is the case -

however, can you please confirm -

in the module filebinaryopen I return a *fp1 -

in the calling pgm I have
fp = filebinaryopen(argv[1])

will that pass fp1 to fp - so that later in my calling pgm if I access fp I will get the pointer to the opened pgm? or am I accessing pointers of pointers????

sue

it must be getting late - i am babbling....

I have altered the fp to an fp1 (see last note)

I am now attemping to read the output'd binary file into the 2nd pgm - I have opened the file via the module (all seems ok) - however, when I try to read it -

Code:

 while ( fread(&in_file_record, sizeof(file_sig), 1, fp1) == 1) {

it doesn't get inside the while look - and no errors are displayed to help...I have confirmed that it is getting to the point immediately before this line...

and not to immediately after....
The call to the filebinaryopen in the module make the mode "rwb"
Is that correct?

sue

HA HA HA HA (much hysterical laughter!!!)

I think it is working!!

I have passed the file mode (as a char array of 2) to the modules - and used that during the file opens.

It seems to be acceptable.


thanks so very much to you and hammer for your patience - a truly steep learning curve - but worth the outcome.

Thanks again!!!

Sue

Thanks for the critique - sebastiani - actually I am not trying to simplify anything - just trying to learn the syntax for passing parameters as pointers - and when it is appropriate to do so - as is stands your comments are redundant to my learning curve at this point in time.....but thanks for the interest and the lecture....

I will bear it in mind.

Sue