CODEWITHSUNDEEP
c#
Shalini Raj
Shalini Raj

Reputation: 307

Different objects of a class with different access levels

There was a question asked by interviewer for C#:

One public class having 5 public members. A person wants an object which consumes 2 members and another to consume all 5 members. How to achieve this ?

I could not understand this. Can anyone please help what did it meant ? What would be a situation where something as above would be required ?

Upvotes: 2

Views: 77

Answers (1)

Tim Schmelter
Tim Schmelter

Reputation: 460340

Well, it's hard to tell if this is what the interviewer wanted to hear. You should have asked what exactly he means with Person and consume.

I guess he wanted to hear that you understand for what interfaces are:

public interface IPerson: IHaveName
{
    DateTime DateOfBirth {get;set;}
    string MainAddress {get;set;}
    string MainPhoneNumber {get;set;}
}

public interface IHaveName
{
    string FirstName {get;set;}
    string LastName {get;set;}
}

public class Person: IPerson
{
    public string FirstName {get;set;}
    public string LastName {get;set;}
    public DateTime DateOfBirth {get;set;}
    public string MainAddress {get;set;}
    public string MainPhoneNumber {get;set;}
}

Now you can pass the Person to a method that needs to consume the whole Person or a method that just needs to consume the Name:

public static void Main()
{
    Person p = new Person(); // skip initialization
    ConsumePerson(p);
    ConsumeNames(p);
}

public static void ConsumePerson(IPerson person)
{
    // do something with the whole Person object
}

public static void ConsumeNames(IHaveName name)
{
   // do something with just the FirstName/LastName
}

Upvotes: 2

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