🚀 go-pugleaf

Jim Fleming (jim.fleming@bytes.com) wrote:

: Has there been any consideration given to relaxing the type requirements
: for the C switch statement expression...???

: 	switch (<integral expression>){
: 	case <integral constant>:
: 		...
: 	default:
: 	}

: Does anyone want to be able to write....???

: 	switch (aString) {
: 		...
: 	case "hello":
: 		...
: 		break;
: 	case "world":
: 		...
: 		break;
: 	}

Think what happens in the following code:
        char *s = something;
        if( s == "abcde" )...

The only consistant extension to C to support you example would be to allow
pointers as values in switch statements. Your switch statment would then work
but not as you want because it would be comparing the addresses of the strings.

I suspect there are compilers out there that only give warnings for implicit
pointer to int conversions that will compile and run your example (with 
lots of warnings) and will do it using pointer comparison.

--
Stephen Baynes                              baynes@mulsoc2.serigate.philips.nl
Philips Semiconductors Ltd
Southampton                                 My views are my own.
United Kingdom