23 lines
556 B
Nim
23 lines
556 B
Nim
import strutils, rdstdin
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proc menu(xs) =
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for i,x in xs: echo " ",i,") ",x
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proc ok(reply, count): bool =
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try:
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let n = parseInt(reply)
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return 0 <= n and n < count
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except: return false
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proc selector(xs, prompt): string =
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if xs.len == 0: return ""
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var reply = "-1"
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while not ok(reply, xs.len):
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menu(xs)
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reply = readLineFromStdin(prompt).strip()
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return xs[parseInt(reply)]
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const xs = ["fee fie", "huff and puff", "mirror mirror", "tick tock"]
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let item = selector(xs, "Which is from the three pigs: ")
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echo "You chose: ", item
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