02-02-2004
Looping 32000 kills a small amount of time.
if (x);
does too I guess. But too small to notice.
if(x) y=7;
set y to 7 if x is non-zero.
if(x);
is very similiar, but just ";" is a null statement that does nothing. So we test x and do nothing either way.
Same deal with
for(....) printf(...);
Here we loop running printf. But remove the printf() and you get just:
for(....) ;
where we loop doing nothing at all.
Any place where you have one statement, you can use a collection of staements inside braces instead.
if(x);
does nothing. Following it with a bunch of statements in braces won't change that.
But
if (x) { y=0; z=0; }
is different. Now the collection is controlled by the if().
if(); { y=0; z=0; }
here the if() has no influence on the collection. The if() is only controlling the empty statement in front of the semicolon.
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