Token pasting in #include directive

[Larry Jones]

In article <18672 at watdragon.waterloo.edu>, afscian at violet.waterloo.edu (Anthony Scian) writes:
> What about the library prototypes that are coded "int foo( int x, int y )"
> when they should be "int foo( int __x, int __y )"?

Eh?  Why is the second any more correct than the first?  Since
the argument names in a prototype only have prototype scope, they
can't conflict with any other names in the program and therefor
do not need leading underscores.
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