hanshudecanshu

object magic {
  //gender

  def greet(name:String="哈哈", age:Int=18,gender:String="女")：Unit={
    println(s"我是${name},我今年${age},${gender}")
  }
  def main (args:Array[String]):Unit={
    greet("饺子",18)
    greet("煮饼",20,"男")

    greet( age =20)
    greet(gender="男",age=20)
  }


}