Create book_example.go

core/book_example.go

@@ -0,0 +1,34 @@
+package core
+
+import (
+    "fmt"
+)
+
+type Book struct {
+    title  string
+    author string
+    year   int
+}
+
+func ExampleBooks() {
+    var book1 Book
+    var book2 Book
+
+    book1.title = "The Great Gatsby"
+    book1.author = "F. Scott Fitzgerald"
+    book1.year = 1925
+
+    book2.title = "To Kill a Mockingbird"
+    book2.author = "Harper Lee"
+    book2.year = 1960
+
+    fmt.Println("Book 1:")
+    fmt.Println("Title:", book1.title)
+    fmt.Println("Author:", book1.author)
+    fmt.Println("Year:", book1.year)
+
+    fmt.Println("\nBook 2:")
+    fmt.Println("Title:", book2.title)
+    fmt.Println("Author:", book2.author)
+    fmt.Println("Year:", book2.year)
+}