How to code for pass one structure value to another structures?

[yezi]

Hi:

How to code for operation between 2 structures?

The structure's defination is :
struct sockaddr_in my_addr;

I need call a subfunction and pass the value in my_addr to the
subfuncition , which same structure but different name?

Thanks for any comments.

bin

[Singamsetty]

yezi wrote:

Hi:

How to code for operation between 2 structures?

The structure's defination is :
struct sockaddr_in my_addr;

I need call a subfunction and pass the value in my_addr to the
subfuncition , which same structure but different name?

Thanks for any comments.

bin

........I'm not sure if I got your question correctly. I'm assuming you
want to know how to pass a structure (or it's members) to a function.
Here's an example:
struct foo {
int a;
int b;
};
struct foo foo1;

/*Passing entire structure*/
Function call: bar(&foo1);
Function defintion:
//if you want, you can use any other parameter name other than foo1
int bar(struct foo *foo1)
{
printf("%d, %d", foo1->a, foo1->b); //foo1 is a pointer so we use ->
return 0;
}

/*Passing a structure member*/
Function call: bar(&(foo1.a))
Function definition:
int bar(int *a)
{
printf("%d", a);
return 0;
}

HTH,
Hemanth

[Singamsetty]

Singamsetty wrote:

yezi wrote:

Hi:

How to code for operation between 2 structures?

The structure's defination is :
struct sockaddr_in my_addr;

I need call a subfunction and pass the value in my_addr to the
subfuncition , which same structure but different name?

Thanks for any comments.

bin

.......I'm not sure if I got your question correctly. I'm assuming you
want to know how to pass a structure (or it's members) to a function.
Here's an example:
struct foo {
int a;
int b;
};
struct foo foo1;

........I should have chosen a different variable name ( '1' looks like
a 'L') in my posting;-) No offense meant.

- Hemanth

[yezi]

Many thanks, that is what I want. the structure is too weird.
Singamsetty wrote:

yezi wrote:

Hi:

How to code for operation between 2 structures?

The structure's defination is :
struct sockaddr_in my_addr;

I need call a subfunction and pass the value in my_addr to the
subfuncition , which same structure but different name?

Thanks for any comments.

bin

.......I'm not sure if I got your question correctly. I'm assuming you
want to know how to pass a structure (or it's members) to a function.
Here's an example:
struct foo {
int a;
int b;
};
struct foo foo1;

/*Passing entire structure*/
Function call: bar(&foo1);
Function defintion:
//if you want, you can use any other parameter name other than foo1
int bar(struct foo *foo1)
{
printf("%d, %d", foo1->a, foo1->b); //foo1 is a pointer so we use ->
return 0;
}

/*Passing a structure member*/
Function call: bar(&(foo1.a))
Function definition:
int bar(int *a)
{
printf("%d", a);
return 0;
}

HTH,
Hemanth

[venkatesh]

you can pass struct to a function but the function proto type should be
like as foolows

return-type function-name(struct tag-name struct-name,other arg..(if
any));
if any mistake please report me

[Christopher Benson-Manica]

yezi <ye*****@hotmai l.com> wrote:

[original post was about passing a structure to a function]

Many thanks, that is what I want. the structure is too weird.

Furthermore, passing a structure by value (rather than a pointer to
the structure) usually is more costly in terms of runtime resources.
It's usually best to pass the pointer.

--
Christopher Benson-Manica | I *should* know what I'm talking about - if I
ataru(at)cybers pace.org | don't, I need to know. Flames welcome.

[Default User]

venkatesh wrote:

you can pass struct to a function but the function proto type should
be like as foolows

That's nice.

Brian

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