funcmain(){
	ifa:=0;a==0{
		fmt.Println(a)
	}

	fmt.Println("-----")

	b:=0
	switchb{
		case1:
			fmt.Println(1)
		case0:
			fallthrough
		case2:
			fmt.Println("heihei")
	}

	fmt.Println("-----")

	switch{
		caseb>1&&b<10:
			fmt.Println("hahah")
		caseb>-2&&b<3:
			fmt.Println("ok")
	}
}