Go语言是一种静态类型的编程语言

变量的定义

变量的定义用var关键字

var name type

var name string = "zhangsan"

变量的赋值

短变量的声明并初始化

// := 自动推导
	name := "zhangsan"
	age := 12

	fmt.Println(name, age)
//打印内存地址
fmt.Printf("%d,%p",num,&num)

变量的交换

Go语言的变量交换

	var a, b int
	a = 100
	b = 200
	b, a = a, b

	fmt.Println(a, b)

iota

iota是go语言的常量计数器

	const (
		a = iota   //iota = 0
		b          //iota = 1
		c          //iota = 2
		d          //iota = 3
		e = "come" //come  iota = 4
		f          //come  iota = 5
		g          //come  iota = 6
		h = iota   //iota = 7
		i          //iota = 8
		j          //iota = 9
	)
	const (
		k = iota	//iota = 0
		l			//iota = 1
		m			//iota = 2
		n
		o
	)