[techtalk] switch function in C (or how to read commandline args?)

[Jeff Dike]

jenn at simegen.com said:
> It doesn't have to be an int, but the 'case' statements need
> constants.

> I hope this helps. 

C considers "foo" to be a string constant, but you can't (or at least 
shouldn't) use it as a case.

Case statements need constants that are 'int-like' :-)  An "integral constant 
expression" according to the ANSI standard.  char, short, long, long long, 
enums, and signed and unsigned variants of the above.  But no strings, floats, 
or doubles.

				Jeff