Scoping question in C

[Kevin Cozens]

William Park wrote:

>I did try it, and got what Henry and others said.  But, I just wanted to
>make sure that data access is legal.  Because, sometimes, I could access
>data pointed to by a dangling pointer for a while, before I get
>segfault.
>  
>
You will be in serious danger of getting a seg fault if 'char *x' was 
only declared inside func() and returned the pointer and you then tried 
to use this pointer outside of func(). You will also have problems when 
you continue to use pointers to memory that was allocated via (m)alloc() 
after it has been freed. These situations don't apply in your example 
since the variable x was declared outside of any function.

-- 
Cheers!

Kevin.  (http://www.interlog.com/~kcozens/)

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