Golang面向对象_继承

package main

import "fmt"

type Person struct {

    name string //名字

    sex  byte   //性别

    age  int    //年龄

}

type Student struct {

    Person //只有类型，没有名字，匿名字段，继承了Person的成员

    id     int

    addr   string

}

func main() {

    //顺序初始化

    var s1 Student = Student{Person{"mike", 'm', }, , "北京"}

    fmt.Println("s1 = ", s1)

    //自动推导类型

    s2 := Student{Person{"mike", 'm', }, , "北京"}

    //fmt.Println("s2 = ", s2)

    //%+v, 显示更详细

    fmt.Printf("s2 = %+v\n", s2)

    //指定成员初始化，没有初始化的常用自动赋值为0

    s3 := Student{id: }

    fmt.Printf("s3 = %+v\n", s3)

    s4 := Student{Person: Person{name: "mike"}, id: }

    fmt.Printf("s4 = %+v\n", s4)

    //s5 := Student{"mike", 'm', 18, 1, "北京"} //err

}

s1 =  {{mike  }  北京}

s2 = {Person:{name:mike sex: age:} id: addr:北京}

s3 = {Person:{name: sex: age:} id: addr:}

s4 = {Person:{name:mike sex: age:} id: addr:}