RE: [Dev-C++] Stress with structs and pointers.

[Ioannis V. <iv...@em...>]

 

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of David McKen
Sent: Thursday, June 12, 2003 3:16 AM
To: dev...@li...
Subject: [Dev-C++] Stress with structs and pointers.


Ok, I need some clarification on a couple topics invloving pointers and
pointers.
 
1) when a struct is created. All that can be assumed is that it contains
trash right? What is a portable way to initalize everything to 0? mset?

 
struct whatever_type s={0, 0, 0 ...};
 

2) when a structure contains a pointer. Access to the address (not the
value) comes in the form {struct_variable_name}.{member_name}? 

 
Yes. 
 

3) how do you de-refrence the pointer in #2 to get the value of the
variable? {struct_variable_name}.*{member_name}? 

 
*struct_variable_name.pointer_name=...
 
or
 
*(struct_variable_name.pointer_name)=...
 
 
to make it easier to understand. I use the second.
 
 

4) if you have a pointer to the structure you access the members via '->'.
If a member of the structure is a pointer the address is gotten via
{struct_varible_name}->{member_name}?  

 
Yes
 

 If so how does one get the value of the varible?
{struct_variable_name}->*{member_name}? 

 
 
*struct_variable_name->pointer_name=...
 
 
 
Ioannis Vranos

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