Re: valor por defecto de variables no definidas

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#1777

From: David Serrano (Hue-Bond)
Date: Fri, 05 Aug 2005 10:37

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David Fraga, vie20050805@11:01:15(CEST):
>

Paso mucho de PHP así que no voy a responder a esto pero...


> como en todos los lenguajes, una variable ni declarada ni definida, seria
> FALSE.

$ perl -e 'use strict; use warnings; $c=348;'
Global symbol "$c" requires explicit package name at -e line 1.
Execution of -e aborted due to compilation errors.
$ _


$ cat > a.c
int main (void) { if (a) printf ("%d\n", a); return 0; }
$ gcc -Wall -std=c99 -o a a.c
a.c: En la funci `main':
a.c:1: error: `a' undeclared (first use in this function)


$ python2.3 -c "print a"
Traceback (most recent call last):
  File "<string>", line 1, in ?
NameError: name 'a' is not defined
$ _


-- 
 David Serrano

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From: "David Serrano (Hue-Bond)" <responder_solo_en_el_grupo@yahoo.es>
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Subject: Re: valor por defecto de variables no definidas
Date: Fri, 5 Aug 2005 10:37:43 +0000 (UTC)
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