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")
}
}