Did you know?

[Vijay Kumar R Zanvar]

Did you know that the following if statement is semantically
right, but could logically be wrong?

if ( i = 2 )
{
/* do something */
}

Tip:

The compiler may only produce a waring: "Possibly incorrect
assignment", but we may ignore it. To avoid such a mistake,
just reverse the two identifiers.

if ( 2 == i )
{
/* do something */
}

If '==' is replaced by an '=', the compiler will give an error
saying "Lvalue required".

--
"When you will be pleased to dine, Mr. Homles?" asked Mrs Hudson,
the landlady, curiosly.
"At seven thirty, the day after tomorrow." said he invovled in his work.

[Joona I Palaste]

Vijay Kumar R Zanvar <vi*****@hotmai l.com> scribbled the following:

Did you know that the following if statement is semantically
right, but could logically be wrong? if ( i = 2 )
{
/* do something */
} Tip: The compiler may only produce a waring: "Possibly incorrect
assignment", but we may ignore it. To avoid such a mistake,
just reverse the two identifiers. if ( 2 == i )
{
/* do something */
} If '==' is replaced by an '=', the compiler will give an error
saying "Lvalue required".

Yes, we did know all this. But thanks for letting us know anyway.

--
/-- Joona Palaste (pa*****@cc.hel sinki.fi) ---------------------------\
| Kingpriest of "The Flying Lemon Tree" G++ FR FW+ M- #108 D+ ADA N+++|
| http://www.helsinki.fi/~palaste W++ B OP+ |
\----------------------------------------- Finland rules! ------------/
"I am looking for myself. Have you seen me somewhere?"
- Anon

[Vijay Kumar R Zanvar]

"Joona I Palaste" <pa*****@cc.hel sinki.fi> wrote in message
news:bl******** **@oravannahka. helsinki.fi...

Vijay Kumar R Zanvar <vi*****@hotmai l.com> scribbled the following:

^^^^^^^^

Did I scribble?

Did you know that the following if statement is semantically
right, but could logically be wrong?
[...]
If '==' is replaced by an '=', the compiler will give an error
saying "Lvalue required".

Yes, we did know all this. But thanks for letting us know anyway.

--
/-- Joona Palaste (pa*****@cc.hel sinki.fi) ---------------------------\

I suppose it would be fun working with you, Mr. Palaste. You must be a
comedian!!

--
"We approached the case, you remember Watson," said
Mr. Homles, "with an absolutely blank mind, which is
always an advantage."

[Andreas Kahari]

In article <bl************ @ID-203837.news.uni-berlin.de>, Vijay Kumar R Zanvar wrote:

Did you know that the following if statement is semantically
right, but could logically be wrong?

if ( i = 2 )
{
/* do something */
}

Yes, it's a well known fact and it's in the FAQ:

http://www.eskimo.com/~scs/C-faq/q17.4.html
--
Andreas Kähäri

[Noah Roberts]

Vijay Kumar R Zanvar wrote:

if ( 2 == i )
{
/* do something */
}

What if 2 != i but i == 2, ever thought of that?

BTW, did you know that the above code doesn't do anything even if 2 ==
i? I wonder what happens if i == 2 though...

NR

[Goran Larsson]

In article <bl************ @ID-203837.news.uni-berlin.de>,
Vijay Kumar R Zanvar <vi*****@hotmai l.com> wrote:

Did you know that the following if statement is semantically
right, but could logically be wrong?

if ( i = 2 )
{
/* do something */
}

Did you know that the following if statement is semantically
right, but could logically be wrong?

if ( i = k )
{
/* do something */
}

--
Göran Larsson http://www.mitt-eget.com/

[Robert Stankowic]

"Noah Roberts" <nr******@donte mailme.com> schrieb im Newsbeitrag
news:bl******** **@quark.scn.ra in.com...

Vijay Kumar R Zanvar wrote:

if ( 2 == i )
{
/* do something */
}

What if 2 != i but i == 2, ever thought of that?

BTW, did you know that the above code doesn't do anything even if 2 ==
i? I wonder what happens if i == 2 though...

What, if you replace "==" with "is equal to" as well as "!=" with "is
unequal to" and "i" with "the value contained in a variable named i" ?
Robert

[Ravi]

On Mon, 29 Sep 2003 08:30:12 GMT, ho*@invalid.inv alid (Goran
Larsson) wrote:

Did you know that the following if statement is semantically
right, but could logically be wrong?

if ( i = k )
{
/* do something */
}

On second thoughts it could be correct. If you want the loop
to execute with i assigned to the value of k only when k is
not zero you might as well use that form.

Sorter than:
if (k!=0)
{
i=k;
/* do everything ;)*/
}
--
main(){char s[40]="sbwjAeftqbnnf e/dpn!ps!CSbwjACj hgppu/dpn";
int i;for(i=0;i<39; putchar(s[i++]-1));return 0;}

[Jirka Klaue]

Noah Roberts wrote:

Vijay Kumar R Zanvar wrote:

if ( 2 == i )
{
/* do something */
}

What if 2 != i but i == 2, ever thought of that?

Well, ...

#define i i, 2

Jirka

[Al Bowers]

Vijay Kumar R Zanvar wrote:

"Joona I Palaste" <pa*****@cc.hel sinki.fi> wrote in message
news:bl******** **@oravannahka. helsinki.fi...

Vijay Kumar R Zanvar <vi*****@hotmai l.com> scribbled the following:

^^^^^^^^

Did I scribble?

Did you know that the following if statement is semantically
right, but could logically be wrong?

[...]

If '==' is replaced by an '=', the compiler will give an error
saying "Lvalue required".

Yes, we did know all this. But thanks for letting us know anyway.

--
/-- Joona Palaste (pa*****@cc.hel sinki.fi) ---------------------------\

I suppose it would be fun working with you, Mr. Palaste. You must be a
comedian!!

Perhaps dry humor given the fact that everyone should know
this if they read the FAG.
See question 17.4
http://www.eskimo.com/~scs/C-faq/q17.4.html