Nesting if statements in switch structures

[Keith Thompson]

You can even do this:

switch(freq)
{
case 1:
if ( variable == 1 )
some_code();
else
case 2:
some_other_code();
}

Also possible is:

switch(freq)
{
case 1:
if ( variable == 1 )
{
some_code();
case 2:
some_other_code();
}
break;
}

Yes, you can. That doesn't mean you should (as I'm sure Old Wolf
knows, but others might not).

There's also Duff's Device; see <http://www.c-faq.com/misc/duff.html>.
Quoting from that page:

In his announcement of the technique to C's developers and the
world, Duff noted that C's switch syntax, in particular its ``fall
through'' behavior, had long been controversial, and that ``This
code forms some sort of argument in that debate, but I'm not sure
whether it's for or against.''

 

[CBFalconer]

Yes, you can. That doesn't mean you should (as I'm sure Old Wolf
knows, but others might not).

There's also Duff's Device; see <http://www.c-faq.com/misc/duff.html>.
Quoting from that page:

In his announcement of the technique to C's developers and the
world, Duff noted that C's switch syntax, in particular its ``fall
through'' behavior, had long been controversial, and that ``This
code forms some sort of argument in that debate, but I'm not sure
whether it's for or against.''

All this emphasizes my attitude that case labels are just further
labels, and should all be pulled out to the left margin, as in
(working from the above examples):

switch(freq) {
case 1: if ( variable == 1 )
some_code();
else
case 2: some_other_code();
}

Also possible is:

switch(freq) {
case 1: if ( variable == 1 ) {
some_code();
case 2: some_other_code();
}
break;
}

</stylewar>

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Also see <http://www.safalra.com/special/googlegroupsreply/>

 

[Technoid]

Thanks for your comments on the question of nesting if statements in
switch structures!
I removed CASENAME and the code compiles now.
Thank you!!