diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..33f2b92
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,75 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "bingame-rs"
+version = "0.1.0"
+dependencies = [
+ "rand",
+]
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "getrandom"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9be70c98951c83b8d2f8f60d7065fa6d5146873094452a1008da8c2f1e4205ad"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.125"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5916d2ae698f6de9bfb891ad7a8d65c09d232dc58cc4ac433c7da3b2fd84bc2b"
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
+
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "wasi"
+version = "0.10.2+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
diff --git a/src/main.rs b/src/main.rs
index c0d62c8..baf1666 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,21 +1,42 @@
 use rand::Rng;
 use std::cmp::Ordering;
 
+fn parse_input() -> Option<u32> {
+
+    loop {
+
+        let mut input = String::new();
+        std::io::stdin()
+        .read_line(&mut input)
+        .unwrap();
+
+        match input.trim().parse::<u32>() {
+
+            Ok(output) => return Some(output),
+
+            Err(why) => {
+
+                match input.trim() {
+
+                    "quit" | ":q" | "q" | "stop" | "exit" => { println!("Stopping..."); return None; }
+                    _ => { println!("{} is not a number!", input); }
+
+                }
+            }
+        };
+    }
+}
+
 fn main() {
 
     println!("Welcome to bingame! Type \"quit\" anytime to stop playing.");
-
-    let mut liminput = String::new();
-
     println!("Provide an upward limit for generated numbers: ");
-    std::io::stdin()
-    .read_line(&mut liminput)
-    .unwrap();
+    let limit = parse_input().unwrap();
+    game(limit)
 
-    let limit = liminput
-        .trim()
-        .parse::<u32>()
-        .unwrap();
+}
+
+fn numgen(limit: u32) -> Result<(u32, u32), bool> {
 
     // generate random number
 
@@ -42,28 +63,35 @@ fn main() {
 
     }
 
-    let binary = binnery
-    .parse::<u32>()
-    .unwrap();
+    let binnery = binnery.parse::<u32>();
 
-    println!("Type {} in binary", nombre);
-    let mut input = String::new();
+    let binary = match binnery {
 
-    std::io::stdin()
-    .read_line(&mut input)
-    .unwrap();
+        Ok(binary) => { binary },
+        Err(why) => { std::process::abort(); }
+    };
 
-    let guess = input
-    .trim()
-    .parse::<u32>()
-    .unwrap();
+    return Ok((nombre, binary));
+}
 
-    match guess.cmp(&binary) {
-        Ordering::Equal => {
-            println!("That's correct! {} in binary is {}!", nombre, binnery);
-        }
-        Ordering::Greater | Ordering::Less => {
-            println!("Nope! {} in binary is {}!", nombre, binnery);
+fn game(limit: u32) {
+
+    loop {
+
+        let ans = numgen(limit).unwrap();
+        let nombre = ans.0;
+        let binary = ans.1;
+
+        println!("Type {} in binary", nombre);
+        let guess = parse_input().unwrap();
+
+        match guess.cmp(&binary) {
+            Ordering::Equal => {
+                println!("That's correct! {} in binary is {}!", nombre, binary);
+            }
+            Ordering::Greater | Ordering::Less => {
+                println!("Nope! {} in binary is {}!", nombre, binary);
+            }
         }
     }
 }
\ No newline at end of file