Started Rust in Action MEAP.

3 files changed, 42 insertions, 0 deletions

diff --git a/rust-book/fibonacci/Cargo.lock b/rust-book/fibonacci/Cargo.lock
new file mode 100755
index 0000000..06aa71c
--- /dev/null
+++ b/rust-book/fibonacci/Cargo.lock
@@ -0,0 +1,4 @@
+[[package]]
+name = "fibonacci"
+version = "0.1.0"
+
diff --git a/rust-book/fibonacci/Cargo.toml b/rust-book/fibonacci/Cargo.toml
new file mode 100755
index 0000000..60bf227
--- /dev/null
+++ b/rust-book/fibonacci/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "fibonacci"
+version = "0.1.0"
+authors = ["Adam Carpenter <adam.carpenter@adp.com>"]
+edition = "2018"
+
+[dependencies]
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));
+    }
+}