package main
import "fmt"
func main(){
	var pc map[string] string
	pc = make(map[string] string)
	pc["qingdao"] = "青岛"
	pc["jinan"] = "济南"
	pc["yantai"] = "烟台"

	delete(pc,"qingdao")

	qingdao,ok := pc["qingdao"]
	
	if ok{
		fmt.Println(qingdao)	
	}else{
		fmt.Println("元素不存在")
	}
	
}
//go/5022