diff --git a/hello.go b/hello.go
index 67520dc..6b8fc53 100644
--- a/hello.go
+++ b/hello.go
@@ -3,6 +3,9 @@ package main
 import "fmt"
 
 func main() {
-
 	fmt.Println("hello")
+	ex, err := fmt.Println("hello")
+	fmt.Println(ex, err)
+	fmt.Println("123")
+	fmt.Println("123")
 }