public static void Main()
Int64[] values = { Int64.MaxValue, 15000, 10000, 2500, 1, 0, -7, -30, -365, -1000, -2500, -10000, -15000, -Int64.MaxValue };
Console.WriteLine("{0,-30}{1,-30}","Int32", "Abs");
Console.WriteLine("{0,-30}{1,-30}","-----", "---");
foreach (Int64 value in values)
Console.WriteLine("{0,-30}{1,-30}", value, value.Abs());