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