38 lines
613 B
V
38 lines
613 B
V
// This program displays the fibonacci sequence
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import os
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fn main() {
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// Check for user input
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if os.args.len != 2 {
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println('usage: fibonacci [rank]')
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// Exit
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return
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}
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// Parse first argument and cast it to int
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stop := os.args[1].int()
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// Can only calculate correctly until rank 92
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if stop > 92 {
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println('rank must be 92 or less')
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return
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}
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// Three consecutive terms of the sequence
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mut a := u64(0)
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mut b := u64(0)
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mut c := u64(1)
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for _ in 0 .. stop {
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// Set a and b to the next term
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a = b
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b = c
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// Compute the new term
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c = a + b
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// Print the new term
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println(c)
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}
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}
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