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Message |
Narendra
Guest
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 Posted: Thu Oct 19, 2006 9:10 am Post subject: structure's memory layout in the function? |
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void function1(void *);
void main()
{
int size_offset = 0;
typedef struct
{
int a;
int b;
int c;
char ch;
}A;
A *pst = NULL;
pst = (A*)malloc(sizeof(A)*1);
function1((void*)pst);
}
void function1(void *pStr)
{
// As i need to intialize the structure members. i want to access it's
me
mbers.
// How can i know the structure's
// memory layout in this function?
//Conditions:
//1. i do not want to declare the structure as global or static.
//2. I will pass the structure pointer as void pointer.
} |
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Alf P. Steinbach
Guest
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| Posted: Thu Oct 19, 2006 9:10 am Post subject: Re: structure's memory layout in the function? |
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* Narendra:
| Quote: | void function1(void *);
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Avoid void.
Invalid in C and C++, and has never been valid.
| Quote: | {
int size_offset = 0;
typedef struct
{
int a;
int b;
int c;
char ch;
}A;
|
No need to use a typedef in C++.
Also, reserve all uppercase names for macros.
| Quote: |
A *pst = NULL;
pst = (A*)malloc(sizeof(A)*1);
|
Use 'new', not 'malloc'.
Don't use casts.
| Quote: | function1((void*)pst);
|
Don't use casts.
| Quote: | }
void function1(void *pStr)
{
// As i need to intialize the structure members. i want to access it's
me
mbers.
|
Use a constructor to initialize memebers.
| Quote: | // How can i know the structure's
// memory layout in this function?
//Conditions:
//1. i do not want to declare the structure as global or static.
//2. I will pass the structure pointer as void pointer.
|
Since you didn't even get 'main' right, it's doubtful that there are any
good or even meaningful reasons for these conditions.
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail? |
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