Re: [Tiny-cobol-users] Filling copybooks in C++

[Jürgen W. <ju...@ya...>]

--- "John R. Culleton" <jo...@we...> wrote:

> A copybook in TinyCOBOL is just an ASCII source file
> placed where the
> compiler can find it. There is no special format.

No, I was speaking about runtime. How can C code
access a copybook?

01 PERSON.
   05 NAME                     PIC X(20) VALUE ' '.
   05 AGE                      PIC 9(04) VALUE 0.

struct person
{
   char * name;
   int age;
   ...
}

void fillCopybook(void * copybook)
{
   strcpy(copybook,myperson->name);
   *(copybook+20) = age;
}

How do I get the structure and offsets of the
copybook?

Is it as simple as all members are behind each other,
or are there any separators or length bytes?

> Interfacing with a compiled C or C++ program can be
> done. The
> documentation for doing this is not available AFAIK.
> In this respect
> OpenCOBOL has better documentation. But there are
> examples in
> the test programs. Look in  ../test.code/T07.

Thanks, but there are no C++ examples. But I guess, I
just have to wrap the C code with extern "C".

Jürgen


	
		
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