public static void Main()
Console.WriteLine("First string: ");
Console.WriteLine("Second string: ");
if (s1.ToLower().Trim() == s2.ToLower().Trim())
Console.WriteLine("Strings are equal");
Console.WriteLine("Strings are not equal");
string s3 = "Celebrating 200 year of Indiana University”;
int i = s3.IndexOf("Year")+4;