I only started C# today (i already know VBNET), and can't work out whats wrong with this loop:

Code:
		static void Main(string[] args)
		{
		 int[] i = new int[3];


		 i[0] = 2;
		 i[1] = 4;
		 i[2] = 61;

		 int sum;

		 for (int x = 0; x < 2; x++)
		 {

			sum += i[x];
		 }

		 Console.WriteLine(sum);
		 Console.ReadLine();
		 }
Sorry for such a simple question.