In Common Lisp, multilevel returns use catch and throw; exception handling in the style of most other modern languages uses handler-case and error. Show that the distinction between these is mainly a matter of style, rather than expressive power. In other words, show that each facility can be used to emulate the other.

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#include #include #include char* days [7] {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}; char today [10]; void handler (int n) { printf (" %s\n", today); int main() { signal (SIGTSTP, handler); for (int n = 0; ; n++) { strcpy (today, days [n%7]); // *Z at keyboard }