编辑代码

protocol Person{
    var name:String {get set}
    var age:Int {get set}
}

struct Student:Person{
    var name : String
    var age : Int
    init(){
        name = ""
        age = 0
    }
}

var geng:Student = Student()
geng.name = "耿伟"
geng.age = 18
print("name:\(geng.name),age=\(geng.age)")