[cpl] [Tema1] Rolul IF / WHILE

[Raluca Grigoras]

Dpdv sintactic constructia ar fi corecta.
Raluca

> On Oct 31, 2015, at 6:38 PM, Cosmin - Ioan PETRI?OR via cpl <cpl at cursuri.cs.pub.ro> wrote:
> 
> Salutare,
> 
> Ok, dar problema mea este de natura sintactica si nu semantica. Sa inteleg ca si din punct de vedere sintactic o constructie x = 2 + while ... ar fi gresita? As I was saying before, in manual sunt tratate identic cele doua statement-uri, cel putin sintactic vorbind.
> 
> Cosmin
> 
> 
> From: Raluca Grigoras <ralucav at gmail.com>
> Sent: Saturday, October 31, 2015 6:34 PM
> To: Cosmin - Ioan PETRI?OR; Compilatoare
> Subject: Re: [cpl] [Tema1] Rolul IF / WHILE
>  
> Salut,
> 
> Tipul unei expresii IF este dat de tipul ultimei instructiuni/expresii din cele doua ramuri. Prin urmare o expresie IF poate avea tipul Int. 
> Tipul unei expresii WHILE este mereu Void, in cazul in care ar aparea intr-o expresie de genul var x = 2 + while …, ar fi o eroare semantica, pentru ca tipul Void nu poate fi convertit la Int.
> 
> Raluca
> 
> 
> 
>> On Oct 31, 2015, at 6:23 PM, Cosmin - Ioan PETRI?OR via cpl <cpl at cursuri.cs.pub.ro <mailto:cpl at cursuri.cs.pub.ro>> wrote:
>> 
>> Hello,
>> 
>> Am vazut in manual, pag. 11, ca IF si WHILE sunt considerati operatori (mai mult decat atat, de acelasi rang). Fair enough.
>> 
>> Problema este ca in teste am observat expresii de genul: var = 2 + if ... then ... else ... end; and I'm ok with that. Dar ce nu am reusit sa deslusesc este daca si WHILE are acelasi statut, pentru ca am vazut doar blocuri WHILE independente.
>> 
>> So here comes my question: Putem folosi constructii WHILE in cadrul expresiilor, sau trebuie tratat separat de IF?
>> 
>> Numai bine,
>> Cosmin
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