diff --git a/example.ss b/example.ss
index 389f4f6..258c626 100644
--- a/example.ss
+++ b/example.ss
@@ -1,20 +1,21 @@
-// This program to solve FizzBuzz;
+// This function is to solve FizzBuzz;
+fn fizzbuzz(i) {
+    if i % 15 == 0 {
+        return "FizzBuzz";
+    };
+    if i % 5 == 0 {
+        return "Buzz";
+    };
+    if i % 3 == 0 {
+        return "Fizz";
+    };
+    return str(i0;
+};
+
 var i <- 0;
 var result <- "";
 while i < 100 {
     var i <- i + 1;
-    if i % 15 == 0 {
-        var result <- result + "FizzBuzz ";
-    }; if !(i % 15 == 0) {
-        if i % 5 == 0 {
-            var result <- result + "Buzz ";
-        }; if !(i % 5 == 0) {
-            if i % 3 == 0 {
-                var result <- result + "Fizz ";
-            }; if !(i % 3 == 0) {
-                var result <- result + f"{i} ";
-            };
-        };
-    };
+    var result <- result + " " + fizzbuzz(i)
 };
 print result;