public static void Main()
int[] intArr = new int[10];
string[,] arr = new string [3, 6];
List<int> list = new List<int>();
for(int i = 0; i < list.Count; i++)
Console.WriteLine(list[i]);
Dictionary<string, string> citiesToStates = new Dictionary<string, string>();
citiesToStates.Add("Mission Viejo", "California");
citiesToStates.Add("Irvine", "California");
citiesToStates.Add("Dallas", "Texas");
Console.WriteLine(citiesToStates["Mission Viejo"]);
Console.WriteLine(citiesToStates["Dallas"]);
foreach(KeyValuePair<string, string> entry in citiesToStates)
Console.Write(entry.Key);