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[QUOTE="Morris Dovey, post: 2472668"]
[email]eyalc1978@gmail.com[/email] (in
[email]1151916189.967014.200880@a14g2000cwb.googlegroups.com[/email]) said:

| Ian Collins wrote:
|| [email]eyalc1978@gmail.com[/email] wrote:
||| Hi
||| let's say I have 20 variables named a1-a20 which are all of the
||| same type (int)
||| I need to access each one of them and according to the value do
||| some operation.
||| Is there some way I can access them inside a loop and build
||| there name dinamically or do I have to access each one of them
||| seperatly?
|||
|| No, but it sounds like you should store the values in an array.
|
| An array will be a good idea however I am getting these values from
| a DB table into a struct with a lot of other fields
| Is there a way to transform this struct? Or maybe some other way?

Names of variables aren't visible in the executable. Once in the
structure, you may be able to use a table of pointers to access each
of your 20 int structure members in a loop.

struct
{  int a1;
   int b1;
   char c[10];
   int a2;
   :
   int a20;
}  db_rec;

int *pointer_table[] = { &db_rec.a1, &db_rec.a2, /*...*/
,&db_rec.a20 };

for (i=1; i<21; i++)
   {  value = *pointer_table[i];
      /* do some value-dependent opperation */
   }[/i]
[/QUOTE]

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