Which of the following statements is correct about the C#.NET program given below if a value 'ABCD' is input to it?

using System;
namespace AptitudeCrackConsoleApplication
{
    class MyProgram
    {
        static void Main(string[] args)
        {
            int index; 
            int vat = 88;
            int[] a = new int(5];
            try
            {
                Console.Write('Enter a number: ');
                index = Convert.Toint32(Console.ReadLine());
                a[index] = val;
            }
            catch(Exception e)
            {
                Console.Write('Exception occurred');
            }
            Console.Write('Remaining program');
        }
    }
}