Using 'continue' in Hi-Tech C

MrNobody said:

In Hi-Tech C, I'm trying to poll the GODONE bit in ADC. In the example, they use

while (GODONE) continue;

Is there any difference if I use while (GODONE); instead (without 'continue')? When I use the second one, it is able to build well without any error.

Please advice. Thanks.

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while(GODONE);

while(GODONE){}

Pommie said:

I would use the semi colon version everytime. It is only ambiguous if you are not really familiar with C.

Mike.

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Sceadwian said:

You say potato, I say potato. Wait... that little phrase doesn't work in text =\

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philba said:

I'd say it's a pretty broken compiler that gets while(GODONE); wrong, as long as GODONE is considered volatile (which I'm pretty sure it is).

Note that this may not work with a declared variable unless it was declared as volatile. An optimizer may get overzealous in the following case

Code:

unsigned char foo;
...
foo = 0;
while(foo);
...

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