🚀 go-pugleaf

In article <1992Aug27.044445.22165@uwm.edu>, 
   rca@csd4.csd.uwm.edu (Robert C Allender) writes:
> 
> I'm trying to find a reasonable block of code that will search through a DOS 
> directory using Turbo C 3.0 in DOS mode.

It appears that you took the following from the TC manual, yet there is at
least one important mistake.  
> eg.
> 
>      { ...
> 
>        struct find_t ffblk;
>        int done;
>        printf("Directory of C:\\\n");
>        done = _dos_findfirst("C:\\*.*",_A_SUBDIR,&ffblk);

The above line has the structure and attribute parameters transposed.
Is the rest okay? (I'll leave that to you.)

>        while(!done) 
>        {
>           printf(" %s\n", ffblk.name);
>           done = _dos_findnext(&ffblk);
>        }
>        return 0;
> 
>      } ...

Next, you wrote...

> the _A_SUBDIR is supposed to return only DOS subdirectory entries, however it
> seems to (as do the other alternatives) also return normal files ...

I might be wrong, but it seems that it has been said many times before that 
findfirst() and findnext() find all "normal" files *and* the ones 
specified by the attribute value.  (The manual doesn't say that though.)
At least that's how they worked last time I used them (but that was in TP).  
What you'll have to do is filter out the "regular" files by 
"if (ffblk.ff_attrb && FA_DIREC)..."
or something like that (it's been a while since I talked C).

Since I never took a course in C (learned it in between the real 
stuff I'm supposed to be doing for a living so I could do that stuff
better), why the underscored prefixes, such as _dos_ ?

PF