package main

import "fmt"

type counter struct {
	count int
}

func (c counter) inc() counter {
	c.count = c.count + 1
	return c
}

func (c counter) get() int {
	return c.count
}

func (c counter) reset() counter {
	c.count = 0
	return c
}

func main() {
	c := counter{}
	fmt.Println(c.get()) // 0

	c = c.inc()
	fmt.Println(c.get()) // 1

	c = c.inc()
	c = c.inc()
	fmt.Println(c.get()) // 3

	c = c.reset()
	fmt.Println(c.get()) // 0
}