package main

import "fmt"

type myInt int

//编写成员函数
func (a1 myInt) add(a2 myInt) myInt {
	return a1 + a2
}

func (a1 myInt) sub(a2 myInt) myInt {
	return a1 - a2
}

func main() {
	var x myInt = 1
	fmt.Println(x.add(2)) //x+2
	fmt.Println(x.sub(2)) //x-2
}

2、输出