'init'

main/der.go

@@ -0,0 +1,20 @@
+package main
+
+import "fmt"
+
+func main() {
+	var book Book
+	book.auth = "1u1"
+	book.name = "aihda"
+	changebook(&book)
+	fmt.Println(book)
+
+}
+func changebook(book *Book) {
+	book.auth = "77"
+}
+
+type Book struct {
+	name string
+	auth string
+}