指针指向一个结构体 也可以创建指向结构的指针。
# 结构体指针
var struct_pointer *Books
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以上定义的指针变量可以存储结构体变量的地址。查看结构体变量地址,可以将 & 符号放置于结构体变量前
struct_pointer = &Book1;
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使用结构体指针访问结构体成员,使用 "." 操作符
struct_pointer.title;
package main
import "fmt"
type Books struct {
title string
author string
subject string
book_id int
}
func main() {
var Book1 Books /* Declare Book1 of type Book */
var Book2 Books /* Declare Book2 of type Book */
/* book 1 描述 */
Book1.title = "Go 语言"
Book1.author = "www.runoob.com"
Book1.subject = "Go 语言教程"
Book1.book_id = 6495407
/* book 2 描述 */
Book2.title = "Python 教程"
Book2.author = "www.runoob.com"
Book2.subject = "Python 语言教程"
Book2.book_id = 6495700
/* 打印 Book1 信息 */
printBook(&Book1)
/* 打印 Book2 信息 */
printBook(&Book2)
}
func printBook( book *Books ) {
fmt.Printf( "Book title : %s\n", book.title);
fmt.Printf( "Book author : %s\n", book.author);
fmt.Printf( "Book subject : %s\n", book.subject);
fmt.Printf( "Book book_id : %d\n", book.book_id);
}
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结构体实例化也可以是这样的
package main
import "fmt"
type Books struct {
}
func (s Books) String() string {
return "data"
}
func main() {
fmt.Printf("%v\n", Books{})
}
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