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-rw-r--r--challenge-104/abigail/lua/ch-2.lua35
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diff --git a/challenge-104/abigail/lua/ch-2.lua b/challenge-104/abigail/lua/ch-2.lua
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+++ b/challenge-104/abigail/lua/ch-2.lua
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+#!/opt/local/bin/lua
+
+--
+-- See ../README.md
+--
+
+--
+-- Run as: lua ch-2.lua
+--
+
+local tokens = 12
+local max_take = 3
+
+while tokens > 0
+do local s = ""
+ if not (tokens == 1)
+ then s = "s"
+ end
+ io . write ("How many tokens do you take? ")
+ io . write (string . format ("(%2d token%s are left) ", tokens, s))
+
+ local take = tonumber (io . read ("*l"))
+
+ if take and 1 <= take and take <= max_take
+ then local takes = max_take + 1 - take
+ local s = ""
+ if not (takes == 1)
+ then s = "s"
+ end
+ io . write (string . format ("Computer takes %d token%s\n", takes, s))
+ tokens = tokens - (max_take + 1)
+ end
+end
+
+io . write ("Computer wins\n")