Re: while () vs. while (1)

It is derived from the C idiom for (;;) where nothing in the conditional is an infinite loop.

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Re^2: while () vs. while (1) by ikegami (Patriarch) on Jan 22, 2011 at 00:36 UTC
Interestingly though, C doesn't seem to allow an empty condition for `while`. `$ cat a.c int main() { while () { break; } return 0; } $ gcc a.c a.c: In function ‘main’: a.c:2: error: expected expression before ‘)’ token` [download] It is well known to allow it for `for`. I read "`for (;;)`" as "for ever", and use it where some use `while (1)`. It could very well be unintentional, but fixing it could break code at no benefit.	[reply] [d/l] [select]

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Re^2: while () vs. while (1)
by ikegami (Patriarch) on Jan 22, 2011 at 00:36 UTC

Interestingly though, C doesn't seem to allow an empty condition for while.

$ cat a.c
int main() {
    while () { break; }
    return 0;
}

$ gcc a.c
a.c: In function ‘main’:
a.c:2: error: expected expression before ‘)’ token
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It is well known to allow it for for. I read "for (;;)" as "for ever", and use it where some use while (1).

It could very well be unintentional, but fixing it could break code at no benefit.

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