diff --git a/src/main.cpp b/src/main.cpp
index 54e47ec..2eeae17 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,10 @@
 #include <iostream>
 
+int add_3(int cx) {
+	return 2 + cx;
+}
+
 int main() {
-    std::cout << "Hello, world!" << std::endl;
+    std::cout << "Hello, world!" << add_3(5) <<  std::endl;
     return 0;
 }