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Estimated hours taken: 8 Add rot13 examples to the samples directory. Note: Estimated time is time for contributors, mainly. samples/README: samples/c_interface/README: Fix the README files, they were a little inaccurate in describing some files and directories.
This directory contains various implementations of `rot13', which
is a simple encryption technique.
From the Jargon File:
rot13 /rot ther'teen/ /n.,v./ [Usenet: from `rotate alphabet
13 places'] The simple Caesar-cypher encryption that replaces each
English letter with the one 13 places forward or back along the
alphabet, so that "The butler did it!" becomes "Gur ohgyre qvq vg!"
Most Usenet news reading and posting programs include a rot13
feature. It is used to enclose the text in a sealed wrapper that the
reader must choose to open -- e.g., for posting things that might
offend some readers, or {spoiler}s. A major advantage of rot13 over
rot(N) for other N is that it is self-inverse, so the same code can
be used for encoding and decoding.
The different implementations are intended to show different styles
of Mercury programs, and different trade-offs that can be made
between conciseness, readability, correctness, error-handling, etc.
To build these samples, install the Mercury compiler and type
mmake depend
mmake