06_go语言基础

// 07枚举

package main

import (

	"fmt"

)

func main() {

	// 1.iota常量自动生成器，每个一行，自动累加1

	// 2.iota给常量赋值使用

	const (

		a = iota // 0

		b = iota // 1

		c = iota // 2

	)

	fmt.Printf("a = %d,b = %d,c = %d\n", a, b, c)

	// 3.iota遇到const,就会重置为0

	const d = iota

	fmt.Printf("d = Î%d\n", d)

	// 4.可以只写一个iota,效果和上面一样

	const (

		a1 = iota // 0

		b1

		c1

	)

	fmt.Printf("a1 = %d,b1 = %d,c1 = %d\n", a1, b1, c1)

	// 5.如果是同一行，值都一样

	const (

		i          = iota

		j1, j2, j3 = iota, iota, iota //同一行都是1

		k          = iota

	)

	fmt.Printf("i=%d,j1=%d,j2=%d,j3=%d,k=%d\n", i, j1, j2, j3, k)

}