Hi all, this is a newbie question :-)
I was wondering if there was a way to use the switch statement in a manner
that each case statement includes more that a simple value. i.e.:
switch ( myFloat )
{
case >0: // ??? how do i write this ???
// execute if myfloat >0
break;
case 0:
// execute if myfloat ==0
break;
default:
// you got the idea
}
TIA
Aristotelis 6 1918
Hello,
"Aristotelis E. Charalampakis"
<ar***********************@REMOVEMEhotmail.com> wrote in message
news:bs***********@ulysses.noc.ntua.gr... Hi all, this is a newbie question :-)
I was wondering if there was a way to use the switch statement in a manner that each case statement includes more that a simple value. i.e.:
switch ( myFloat ) {
case >0: // ??? how do i write this ???
// execute if myfloat >0
break;
case 0:
// execute if myfloat ==0
break;
default:
// you got the idea }
TIA Aristotelis
You can use if/else if/else combos or some sort of control table of your
design:
float range[3*2] = { 0.1, 0.9, 1, // if greater than 0.1 and below 0.9 then
integer i = 1
1.1, 2.1, 2}; // if 1.1 and 2.1 then 2, etc..
--
Elias
So it is not possible to write something like
"case >0" ?
Can it be written in the form
switch ( TRUE )
case myFloat>0:
etc?
In VB I can write something like this:
select case myFloat
case 2 , 3
'Do something
case Is > 4
'do something else
case else
'default
end select
Or
select case True
case myFloat>4
'Do something
case myFloat<0
'do something else
case else
'default
end select
Is there a way to implement the above with the switch statement?
TIA,
Aristotelis
"lallous" <la*****@lgwm.org> wrote in message
news:bs************@ID-161723.news.uni-berlin.de... Hello,
"Aristotelis E. Charalampakis" <ar***********************@REMOVEMEhotmail.com> wrote in message news:bs***********@ulysses.noc.ntua.gr... Hi all, this is a newbie question :-)
I was wondering if there was a way to use the switch statement in a
manner that each case statement includes more that a simple value. i.e.:
switch ( myFloat ) {
case >0: // ??? how do i write this ???
// execute if myfloat >0
break;
case 0:
// execute if myfloat ==0
break;
default:
// you got the idea }
TIA Aristotelis
You can use if/else if/else combos or some sort of control table of your design: float range[3*2] = { 0.1, 0.9, 1, // if greater than 0.1 and below 0.9
then integer i = 1 1.1, 2.1, 2}; // if 1.1 and 2.1 then 2,
etc.. -- Elias
"Aristotelis E. Charalampakis" <ar***********************@REMOVEMEhotmail.com> wrote in message In VB I can write something like this:
We're not in VB anymore.
select case myFloat case 2 , 3
In C/C++:
case 2: case 3:
There's no way to do the relationals directly. You could do something like:
switch(i) {
case 2:
case 3:
...
default:
if(i > 10) { ...
You can't do switch with floats at all. The arg has to be an integer or
enum type.
Aristotelis E. Charalampakis wrote: Hi all, this is a newbie question :-)
I was wondering if there was a way to use the switch statement in a manner that each case statement includes more that a simple value. i.e.:
switch ( myFloat )
You cannot use switch/case on floating point values, only integral
values.
{
case >0: // ??? how do i write this ???
// execute if myfloat >0
break;
case 0:
// execute if myfloat ==0
break;
default:
// you got the idea }
There is no way to do that. Just use if:
if (myFloat == 0)
// execut if myFloat == 0
else if (myFloat > 0)
// esecute if myFloat > 0
else
// you got the idea
Btw: testing floating point values for equality is most often a bad idea
Thank you all. I will stick to the if / else combos. Btw: testing floating point values for equality is most often a bad idea
Yes, it is a bad idea. I am not noobie in general, just in C++.
Yet, I have persuaded myself to write some dlls (mostly math stuff) in C++,
so that I get to know it. Some other dlls are in Visual Fortran 6.5, the gui
in VB.
Aristotelis.
"Aristotelis E. Charalampakis" <ar***********************@REMOVEMEhotmail.com> wrote in message news:<bs***********@ulysses.noc.ntua.gr>... Hi all, this is a newbie question :-)
I was wondering if there was a way to use the switch statement in a manner that each case statement includes more that a simple value. i.e.:
A way of doing it (just as tiring as if-else though) is:
switch (myFloat > 0) {
case true: blah blah; break; //myfloat > 0
case false: switch (myFloat == 0) {
case true: blah blah; break; //myfloat == 0
case false: blah blah; break; //myfloat < 0
}
break;
} This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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