Question

I am a rookie to C# and here is my question

---

class myClass
{
    int start;
    int end;
    .......
}


class program
{

    public void main()
    {

        myClass[] a= new myClass[10];
        for (int i = 1; i < a.length; i++)
        {
           myClass b = new myClass();
           a[i] = b;
           a[i].start = 1;
           ...  (keep populating)
           ...
        }
           console.writeline(a[1].start)       // NO PROBLEM WITH THIS LINE, THE VALUE WAS OUTPUTED
        subMethod(a);
    }

    public void subMethod(myClass[] a)
    {
        console.write(a[1].start);         // NO PROBLEM WITH THIS LINE, OUTPUT NORMALLY
        for (int i = 1; i < a.length, i++)
        {
            int h = a[i].start;            ????? OBJECT NOT INSTANTIATED
        }
    }
}

---

The error is as indicated above and I have difficulty to understand it. Anyone can help me out. Thanks in advance

Answer 1

Please post code that compiles. The error is probably in your transcribing of the code, because this code works perfectly fine:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace RandomArrayTest
{
    class MyClass
    {
        public int start;
    }

    class Program
    {
        static void Main(string[] args)
        {
            MyClass[] a = new MyClass[10];
            for(int i=1; i<a.Length; i++)
            {
                MyClass b = new MyClass();
                a[i] = b;
                a[i].start = 1;
            }

            MyFunction(a);
        }

        static void MyFunction(MyClass[] a)
        {
            for (int i = 1; i < a.Length; i++)
            {
                int h = a[i].start;
                Console.WriteLine(h);
            }
        }
    }
}