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- procedure spell(n)
- local m
- n := integer(n) | stop(image(n)," is not an integer")
- if n <= 12 then return {
- "0zero,1one,2two,3three,4four,5five,6six,7seven,8eight,_
- 9nine,10ten,11eleven,12twelve," ? {
- tab(find(n))
- move(*n)
- tab(upto(","))
- }
- }
- else if n <= 19 then return {
- spell(n[2] || "0") ?
- (if ="for" then "four" else tab(find("ty"))) || "teen"
- }
- else if n <= 99 then return {
- "2twen,3thir,4for,5fif,6six,7seven,8eigh,9nine," ? {
- tab(upto(n[1]))
- move(1)
- tab(upto(",")) || "ty" ||
- if n[2] ~= 0 then "-" || spell(n[2])
- }
- }
- else if n <= 999 then return {
- spell(n[1]) || " hundred" ||
- (if (m := n[2:0]) ~= 0 then " and " || spell(m) else "")
- }
- else if n <= 999999 then return {
- spell(n[1:-3]) || " thousand" ||
- (if (m := n[2:0]) ~= 0 then " and " || spell(m) else "")
- }
- else if n <= 999999999 then return {
- spell(n[1:-6]) || " million" ||
- (if (m := n[2:0]) ~= 0 then " and " || spell(m) else "")
- }
- else fail
- end
-
- procedure spellw(n)
- write(n, " ", spell(n))
- return
- end
-
- procedure main()
- every spellw(1 to 25)
- every spellw(30 to 110 by 3)
- spellw(945123342)
- every spellw(10000000 to 10000500 by 7)
- end
-