diff --git a/structs/demo1.go b/structs/demo1.go
index 54a70af..76b6777 100644
--- a/structs/demo1.go
+++ b/structs/demo1.go
@@ -3,11 +3,12 @@ package structs
 import "fmt"
 
 func Demo1()  {
-	fmt.Println(product{"Computer", 5000, "XYZ"})
+	fmt.Println(product{"Computer", 5000, "XYZ", 20})
 }
 
 type product struct {
 	name string
 	unitPrice float64
 	brand string
+	discountRate int
 }
\ No newline at end of file