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28 lines
676 B
Plaintext
28 lines
676 B
Plaintext
"- Calculator -".println
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"Type =<num> to set the value to that number.".println
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"Type +<num>, -<num> or *<num> to change the value.".println
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"Type exit to exit.".println
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current := 0.0
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{() -> {
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("[ ", current, " ]").concat.println
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input := ().read_line.trim
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num := (input, 1).substring.trim.parse_float.try((
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() -> 0.0,
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val -> val
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))
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mode := input.substring(0, 1)
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if mode.eq("+") {
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¤t = (current, num).sum
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} else if mode.eq("-") {
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¤t = (current, (num, -1).product).sum
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} else if mode.eq("*") {
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¤t = (current, num).product
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} else if mode.eq("=") {
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¤t = num
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} else if input.eq("exit") {
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(())
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}
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}}.loop
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