structure initialization

[aarklon]

Hi all,

why the following structure initialization is not valid

#include<stdio.h>
struct rec
{
char name[10];
int age;
};
struct rec r;

int main(void)
{

r = {"Tom",32};
puts(r.name);

return 0;
}

[Vladimir S. Oka]

On Thursday 09 March 2006 19:54, aa*****@gmail.com opined (in
<11*********************@v46g2000cwv.googlegroups. com>):

Hi all,

why the following structure initialization is not valid
Because the compiler does not know what type {"Tom",32} is.

#include<stdio.h>
struct rec
{
char name[10];
int age;
};
struct rec r;

int main(void)
{

r = {"Tom",32};

You could do:

r = (struct rec){"Tom",32};

Whether this is good style is another matter...

--
BR, Vladimir

Cthulhu Cthucks!

[Martin Ambuhl]

aa*****@gmail.com wrote:

Hi all,

why the following structure initialization is not valid
It's not an initialization, but an assignment.

But this code, containing an initialization is OK:
#include <stdio.h>

struct rec
{
char name[10];
int age;
};

int main(void)
{
struct rec r = { "Tom", 32 };
puts(r.name);
return 0;
}
And with a C99 compiler, this code with an assignment is OK.

#include <stdio.h>

struct rec
{
char name[10];
int age;
};
struct rec r;

int main(void)
{
r = (struct rec) {"Tom", 32};
puts(r.name);

return 0;
}
[OP's code]
#include<stdio.h>
struct rec
{
char name[10];
int age;
};
struct rec r;

int main(void)
{

r = {"Tom",32};
puts(r.name);

return 0;
}

[white.crow]

this type of definition is static and according to Ritchie such
definitions sshould be done during declaration of the variable itself.

[Vladimir S. Oka]

On Thursday 09 March 2006 22:12, white.crow opined (in
<11*********************@j52g2000cwj.googlegroups. com>):

this type of definition is static and according to Ritchie such
definitions sshould be done during declaration of the variable itself.

What type of definition? Ritchie? Guy Ritchie?

Quote what a nd who you're replying to or many people won't know what
you're talking about, and will ignore you. Read:
<http://cfaj.freeshell.org/google/>.

--
BR, Vladimir

A.A.A.A.A.: An organisation for drunks who drive.

[Keith Thompson]

"white.crow" <c.*****@gmail.com> writes:

this type of definition is static and according to Ritchie such
definitions sshould be done during declaration of the variable itself.

What type of definition?

You should follow a newsgroup for a while, or browse the archives,
before posting. If you had done so here, you could have seen several
*hundred* references to <http://cfaj.freeshell.org/google/>, which
tells you how and why to provide sufficient context when posting
through groups.google.com.

Read <http://cfaj.freeshell.org/google/>. Read it now. Tell your
friends. And ask Google to fix their broken interface, so we can stop
having to remind poeple to read <http://cfaj.freeshell.org/google/>.

That's <http://cfaj.freeshell.org/google/>.

--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
Read <http://cfaj.freeshell.org/google/>