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// This program displays the fibonacci sequence |
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import os |
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|
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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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|
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return |
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} |
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|
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// Parse first argument and cast it to int |
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|
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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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|
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// Three consecutive terms of the sequence |
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mut a := i64(0) |
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mut b := i64(0) |
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mut c := i64(1) |
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println(a + b + c) |
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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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|
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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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|
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// From https://github.com/vlang/v/blob/master/examples/fibonacci.v |
