using System;

​

public class StructExample {

    public static void Main (string[] args) {

        // use default constructor, all set to 0

        Student s1 = new Student();

        Console.WriteLine(s1.GetTot());

        Console.WriteLine(s1.GetGrade());

        // use custom constructor

        Student s2 = new Student(90);

        Console.WriteLine(s2.GetTot());

        Console.WriteLine(s2.GetGrade());

    }

}

​

// implement the IGrade interface

struct Student : IGrade

{   

    public int maths;

    public int english;

    public int csharp;

​

    //public member function

    public int GetTot()

    {

        return maths+english+csharp;

    }

​

    //We have a constructor that takes an int as argument

    public Student(int y)

    {

        maths = english = csharp = y;

    }

​

    //This method is implemented because we derive

    //from the IGrade interface

    public string GetGrade()

    {

        if(GetTot() > 240 )

            return "Brilliant";

        if(GetTot() > 140 )

            return "Passed";

        return "Failed";

    }

}

​

interface IGrade

{

    string GetGrade();

}