diff --git a/ex3.rs b/ex3.rs
new file mode 100644
index 0000000..242076f
--- /dev/null
+++ b/ex3.rs
@@ -0,0 +1,9 @@
+// Make me compile!
+
+struct Foo {
+    capacity: i32,
+}
+
+fn main() {
+    println!("{:?}", Foo { capacity: 3 });
+}