using System;

public class Program

{

    public static void Main()

    {

    string [] Students ={"Alices","bob","sam","Jack"};

        int[]Mathematics={10,15,90,2};

            int[]program={93,16,0,88};

        Console.WriteLine("Select astudent fro the  followng:");

        int i=0; 

        foreach(string student in Students)

        {

            Console.WriteLine(i+""+student);

            i++;

        }

        Console.WriteLine();

        Console.WriteLine("Selection: ");

        int index=int.Parse(Console.ReadLine());

        Console.WriteLine( "Students Name "+ Students[index]);

        Console.WriteLine("Student Math Mark "+Mathematics[index]);

        Console.WriteLine(program[index]);

        Console.WriteLine("The average marks for maths is"+Averagemarks(Mathematics).ToString("0.00"));

    }

    static double Averamarks()

    {

        return                                                                                                                                                                                                                                                                                                                   

    }

}