Rabbit Web: Value of array's element as index of element of another array

Question

Hello,

I work with a Rabbit 6700 and Dynamic C 10.66.

Example:

int A[3] = {11, 22, 33};
#web A
int B[3] = {1, 2, 3};
#web B

in browser:

<?z echo($B[0]) ?> shows "1",
<?z echo($A[1]) ?> shows "22",
but <?z echo($A[$B[0]]) ?> shows "ZHTML ERROR: Unknown variable"

What the problem, and why it doesn't work correctly?

Thanks for your help.

Answer 1

First, note that RabbitWeb makes use of single-letter variable names for loop control. You should be using multi-letter variable names in your program.

Second, RabbitWeb does not support multiple levels of array indexing. You can work around this by using a loop:

Code:

int foo[3] = {11, 22, 33};
#web foo
int bar[3] = {1, 2, 3};
#web bar

Code:

<?z echo($bar[0]) ?> shows "1"
<?z echo($foo[1]) ?> shows "22"
<?z for ($A = $bar[0]; $A <= $bar[0]; $A++) { ?>
<?z print($foo[$A]) ?> shows "22"
<?z } ?>

It's a bit of a hack, but it accomplishes your goal.

Finally, please use the latest version of Dynamic C (10.72A). You can view the Release Notes for an idea of how many bugs have been fixed since the 10.66 release you're using. There's also a 10.72B release in the works -- you can see what's going into that on the GitHub repository for Dynamic C.

https://github.com/digidotcom/DCRabbit_10