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46 lines
1.6 KiB
Plaintext
46 lines
1.6 KiB
Plaintext
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TITLE
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A2osX xmastree (bin/xmastree) Command Help
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xmastree -- displays a Christmas tree of user defined height.
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SYNOPSIS
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xmastree <height>
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DESCRIPTION
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xmastree is a simple console-based utility that displays a Christmas tree
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of user defined height. You provide a height in the range of 1-130 and it
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will produce a Christmas tree of that height. However, 41 is the practical
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maximum for it to display fully on the Apple II's 80-column screen. As
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well, while you can go higher than 41, on the local console display it
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will disappear horizontally off the right side of the screen due to the
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80-column limit.
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PAGE
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The xmastree utility does not accept any options, only a single integer to
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specify tree height.
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The xmastree utility always exits with a successful result of 0.
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EXAMPLES
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# xmastree 5
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*
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***
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*****
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*******
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*
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HISTORY
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The xmastree utility was originally written in January of 2012 as part of
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a coding kata challenge. Other entries were done in Java, Python, C#, etc.
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and I decided to be different by writing it in 6502 for an Apple II.
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The program sat on a hard drive for almost a decade before I decided to
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port it to A2osX. While I originally did the work during KansasFest 2021,
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I figured I'd wait for December to release it to align with the holiday
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season. Brian J. Bernstein <brian@dronefone.com>, December 2 2021.
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BUGS
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Negative values and those greater than an 8-bit (0-255) results are not
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defined, though it will most likely just display a tree of unexpected
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height.
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