diff --git a/hello_cargo/src/main.rs b/hello_cargo/src/main.rs
index e7a11a9..8f80109 100644
--- a/hello_cargo/src/main.rs
+++ b/hello_cargo/src/main.rs
@@ -1,3 +1,30 @@
 fn main() {
     println!("Hello, world!");
+    fizzbuzz_to(100);
 }
+
+fn is_divisible_by(lhs: u32, rhs: u32) -> bool {
+    if rhs == 0 {
+        return false;
+    }
+
+    lhs % rhs == 0
+}
+
+fn fizzbuzz(n: u32) -> () {
+    if is_divisible_by(n, 15) {
+        println!("fizzbuzz");
+    } else if is_divisible_by(n, 3) {
+        println!("fizz");
+    } else if is_divisible_by(n, 5) {
+        println!("buzz");
+    } else {
+        println!("{}", n);
+    }
+}
+
+fn fizzbuzz_to(n: u32) {
+    for n in 1..n + 1 {
+        fizzbuzz(n);
+    }
+}
\ No newline at end of file