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switch statement

Angela lewis
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Joined: Mar 01, 2004
Posts: 100


Why does this code produce "default" and not 1 ?
Geoffrey Vlassaks
Greenhorn

Joined: May 12, 2004
Posts: 24
That's because the unicode value of '1' will be taken to compare in the switch statement. This unicode value differs from 1, 2 and 3 so the default will be taken...

Greetz
Wendal Park
Ranch Hand

Joined: Aug 28, 2001
Posts: 39
Geoffrey, I believe your explanation isn't quite correct.

The integer value of a char primitive is in fact the ASCII value of the character it represents. As it shows in the following code:



So even for char x = '1', the value x holds is the ASCII value of '1', which is 49.
[ May 25, 2004: Message edited by: Wendal Park ]

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Barry Gaunt
Ranch Hand

Joined: Aug 03, 2002
Posts: 7729
Wendal, the char does not have to be a ASCII character like 'a' or '1', it could be some value like \u0546 (whatever that is) which is way out of the ASCII range.


[ May 25, 2004: Message edited by: Barry Gaunt ]

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Wendal Park
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Joined: Aug 28, 2001
Posts: 39
Oh right, thanks for pointing out that.
I was just focusing on the single char (e.g. 'a') case which made me think of ASCII from the very beginning.
 
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subject: switch statement