public static void Main()
string[] nameOfClassmates = {"Alcantara", "Florendo", "Galolo", "Guno", "Villamor"};
foreach(string name in nameOfClassmates)
string[,] letters = { {"C","D","E"},{"F","G","H"} };
for (int Zero = 0; Zero<letters.GetLength(0); Zero++)
for(int One = 0; One<letters.GetLength(1); One++)
Console.Write(letters[Zero,One]+" ");
string msg = "hello, What's up";
if(msg.Contains("hello")) {
Console.WriteLine("There's a hello in message");
Console.WriteLine("There's no hello in message");