Rock-paper-scissors: Difference between revisions
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m (→{{header|REXX}}: added/changed comments in the REXX section header, added a programming note in the output section.) |
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This version of the REXX program: |
This version of the REXX program: |
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::* allows the human player to abbreviate their choice |
::* allows the human player to abbreviate their choice |
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::* issues appropriate error messages for an incorrect (or no) choice(s) |
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::* allows the human player to QUIT at any time |
::* allows the human player to QUIT at any time |
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::* keeps track of the human player's responses (to make |
::* keeps track of the human player's responses (to hopefully make computer winning choices) |
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::* uses proper "English" ''rock breaks scissors'' |
::* uses proper "English" ''rock breaks scissors'' |
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<lang rexx>/*REXX pgm plays rock-paper-scissors with a CBLF (carbon-based life form*/ |
<lang rexx>/*REXX pgm plays rock-paper-scissors with a CBLF (carbon-based life form*/ |
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end /*forever*/ |
end /*forever*/ |
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/*stick a fork in it, we're done.*/</lang> |
/*stick a fork in it, we're done.*/</lang> |
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Programming note: REXX program statement (line) 15: |
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<lang> upper a; a1=left(a,1) /*uppercase answer, get 1st char.*/</lang> |
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could be replaced with a more compact (and faster and obtuse and less idiomatic) version: |
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<lang>parse upper var a a 1 a1 2</lang><br> |
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'''output''' with various responses from the user (output shown is a screen scraping): |
'''output''' with various responses from the user (output shown is a screen scraping): |
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<pre> |
<pre> |
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