package main

import "fmt"

type Books struct {
	title string
	author string
	subject string
	id int
}

func main() {
	fmt.Println(Books{"test1", "testname", "testsub", 1})
	var book1 Books
	book1.id = 2
	book1.title = "test2"
	book1.author = "testname2"
	fmt.Println(book1)
}