30 lines
643 B
Rust
30 lines
643 B
Rust
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use arkham::{App, Context, Opt};
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fn main() {
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let _ = App::new()
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.name("Fibonacci App")
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.version("1.0")
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.opt(Opt::scalar("count").short("n").long("num"))
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.handler(fibonacci_handler)
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.run()
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.unwrap();
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}
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fn fibonacci_handler(_app: &App, ctx: &Context, _args: &[String]) {
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let v = fibonacci(
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ctx.get_string("count")
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.unwrap_or("1".to_string())
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.parse()
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.unwrap_or(1),
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);
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println!("Value is: {}", v);
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}
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fn fibonacci(n: u32) -> u32 {
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match n {
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0 => 1,
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1 => 1,
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_ => fibonacci(n - 1) + fibonacci(n - 2),
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}
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}
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