public static void Main()
Console.WriteLine("Please input a string:");
string str1 = Console.ReadLine();
Console.WriteLine("Please input a second string:");
string str2 = Console.ReadLine();
Console.WriteLine("Equal");
Console.WriteLine("Not Equal");
string strCelebrate = "Celebrating 200 year of Indiana University";
int iSpace = strCelebrate.IndexOf("r",6);
strCelebrate = strCelebrate.Insert(iSpace + 1,"s");
Console.WriteLine(strCelebrate);