30 lines
607 B
Text
30 lines
607 B
Text
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get "libhdr"
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let roman(s) = valof
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$( let digit(ch) = valof
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$( let ds = table 'm','d','c','l','x','v','i'
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let vs = table 1000,500,100,50,10,5,1
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for i=0 to 6
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if ds!i=(ch|32) then resultis vs!i
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resultis 0
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$)
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let acc = 0
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for i=1 to s%0
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$( let d = digit(s%i)
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if d=0 then resultis 0
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test i<s%0 & d<digit(s%(i+1))
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do acc := acc-d
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or acc := acc+d
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$)
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resultis acc
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$)
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let show(s) be writef("%S: %N*N", s, roman(s))
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let start() be
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$( show("MCMXC")
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show("MDCLXVI")
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show("MMVII")
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show("MMXXI")
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$)
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