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diff --git a/examples/fibbonacci.pipa b/examples/fibbonacci.pipa
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+fn main(): i32 {
+ return fib(13);
+}
+
+fn fib(n: i32): i32 {
+ if n <= 1 {
+ return n;
+ }
+ return fib(n - 1) + fib(n - 2);
+}