From 67cdcc2e12118becb823e20a40cc2687f2b8425a Mon Sep 17 00:00:00 2001
From: Adam Carpenter <53hornet@gmail.com>
Date: Wed, 27 Mar 2019 15:32:37 -0400
Subject: Started Rust in Action MEAP.

---
 rust-book/fibonacci/src/main.rs | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100755 rust-book/fibonacci/src/main.rs

(limited to 'rust-book/fibonacci/src')

diff --git a/rust-book/fibonacci/src/main.rs b/rust-book/fibonacci/src/main.rs
new file mode 100755
index 0000000..0b4f22b
--- /dev/null
+++ b/rust-book/fibonacci/src/main.rs
@@ -0,0 +1,31 @@
+use std::env;
+
+fn fib(n: u32) -> u32 {
+
+    if n == 0 || n == 1 { 
+        return n;
+    }
+    else {
+        return fib(n - 1) + fib(n - 2);
+    }
+
+}
+
+fn main() {
+    // grab iterations
+    let iterations: u32 = match env::args().nth(1) {
+        Some(s) => {
+            let attempt: u32 = s.trim().parse()
+                .expect("error: could not parse iterations");
+            attempt
+        },
+        None => {
+            eprintln!("error: usage: fibonacci [iterations]");
+            return;
+        },
+    };
+
+    for i in 0..iterations {
+        println!("{}", fib(i));
+    }
+}
-- 
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