Author:

• Name: Yusuke Endoh
  Location: JP - Japan

To build:

    make

An alternate version of this program exists. See Alternate code below.

To use:

    ./prog

Try:

    ./run_clock
    # And watch closely for 15-20 seconds

Alternate code:

An alternate version of this entry, prog.alt.c, is provided. This alternate code uses Unicode letters.

Alternate build:

    make alt

Alternate use:

Use prog.alt as you would prog above.

Alternate try:

    ./run_clock.alt
    # And watch closely for 15-20 seconds

Judges’ remarks:

You may be tempted to use a mirror. Resist the temptation! Try figuring out how the clock hands are drawn. Can you change the program to make it draw a familiar (non-mirrored) clock face? Can you add the second hand?

When using the run_clock.sh shell script, your perception of time might depend on what time it is.

Author’s remarks:

Prepare a mirror!

    make clock

Note: You need to recompile it each run.

Primary files

• prog.c - entry source code
• Makefile - entry Makefile
• prog.alt.c - alternate source code
• prog.orig.c - original source code
• run_clock.alt.sh - script to try alternate code
• run_clock.sh - script to run entry

Secondary files

• 2020_endoh3.tar.bz2 - download entry tarball
• README.md - markdown source for this web page
• .entry.json - entry summary and manifest in JSON
• .gitignore - list of files that should not be committed under git
• .path - directory path from top level directory
• index.html - this web page

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