Notice that your code has a subtle bug.
Even if he is running the code through CPP
first (to strip out comments, expand macros, rejoin lines), he still has plenty of corner cases to worry about (strings, fucntion pointers, etc)...
#define p printf
n/*this is a comment: main()*/(int argc, char **argv)
int (*f)(int, char **) = &main;
p("hello world: main()\n");
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