Take the following example:

  for i:= 0 to 2 do;
  WriteLn(i);

Can i safely assume that after the for loop the value of "i" is 2?

Thanks in advance

Luiz

No. I think it is even specified in the pascal standard.

Michael.

And unless the compiler (programmer) use an extra variable just to attain this behaviour, the value after the loop will 3 (i.e. end value +1).

-Flávio

I would NEVER rely on this in production code. The value of the control variable of a For loop after execution should never be relied upon. A simple change in the compiler at some future point could break a lot of your code.

Cheers,

Andy

Flávio Etrusco wrote

And unless the compiler (programmer) use an extra variable just to attain this behaviour, the value after the loop will 3 (i.e. end value +1).

No, it can be anything, and the actual value even depends on the compiler version.

Jonas

I would NEVER rely on this in production code. The value of the control variable of a For loop after execution should never be relied upon. A simple change in the compiler at some future point could break a lot of your code.

To be honest I would call it a bug if a comipler didn't warn about it (I don't only advocate it being reported as an 'error' so people don't call me a fanatic ;-)

IMHO the for-loop variable should be visible only inside the loop and should even be not reusable ;-) Actualy I've always dreamed the somebody came up with a Pascal-coherent syntax for scoped variables, but now FPC has inline functions support, I guess I was dreaming of the wrong feature ;-)

But I still dream the day people agreed that all variables had to be declared with a some modifier to be alowed to be assigned (with ':=') more than once ;-)

Cheers,
Flávio

Thanks for all

Luiz