tried everythin, computed property

struct Friend: FullyNameable {
    let firstName: String
    let middleName: String
    let lastName: String

    var fullName: String { /// computed property of Friend Struct.
    return “\(firstName) \(middleName) \(lastName)”
    }
}

let friend = Friend(firstName: “Taylor”, middleName: “Aliston”, lastName: “Swift”)  // this is instance, so we can add computed property to protocol through stuck Friend.
friend.fullname



protocol UserType {
  var name: String { get }
  var age: Int { get set } // is this an example of a specific instance property that protocols require conforming types, or is this just a conforming type.
}

struct Person: UserType {
    let Name: String
    let Age: Int

    var UserType: String{ // trying to use a computed property of Person struct so I can add to instance below, whats going wrong here
        return (\(Name) \(Age))
}

let somePerson = Person(Name: "George", Age : 32)

—————
protocol UserType {
  var name: String { get }
  var age: Int { get set } // is this an example of a specific instance property that protocols require conforming types, or is this just a conforming type.
}

struct Person: UserType {
    let Name: String
    let Age: Int

    var name: String{ // trying to use a computed property of Person struct so I can add to instance below, whats going wrong here
        return "\(Name)"

    }
    var age: Int {  // is there away to return both these at same time like we did with fullName returning firstName, middleName and lastname.
        return "\(Age)"
    }
}

let somePerson = Person(Name: "George", Age : 32)

———————
swift_lint.swift:8:8: error: type 'Person' does not conform to protocol 'UserType'
struct Person: UserType {
       ^
swift_lint.swift:5:7: note: protocol requires property 'age' with type 'Int'
  var age: Int { get set } // is this an example of a specific instance property that protocols require conforming types, or is this just a conforming type.
      ^
swift_lint.swift:16:9: note: candidate is not settable, but protocol requires it
    var age: Int {  // is there away to return both these at same time like we did with fullName returning firstName, middleName and lastname.
        ^
swift_lint.swift:17:16: error: cannot convert return expression of type 'String' to return type 'Int'
        return "\(Age)"