public static void Main()
string strItemCode = "sony-dvd-062019";
myEntry = strItemCode.Split('-');
string strDate = myEntry[2];
string strYear = strDate.Substring(intstartIndex, intlength);
string strMonth = strDate.Substring(intstartIndexM, intlengthM);
Console.WriteLine("Manufacturer: " + myEntry[0]);
Console.WriteLine("Product: " + myEntry[1]);
Console.WriteLine("Month: " + strMonth);
Console.WriteLine("Year: " + strYear);
Console.WriteLine("Enter an email address: ");
string stremailaddress = Console.ReadLine();
int intStringSize = stremailaddress.Length;
int intRule = intStringSize - 1;
int intAtSign = stremailaddress.IndexOf("@");
if (intAtSign <= 0 || stremailaddress.EndsWith("@"))
Console.WriteLine("This is not a valid email address. Enter a valid email!");
int intlengthU = (intAtSign);
string strUsername = stremailaddress.Substring(intstartIndexU, intlengthU);
int intstartIndexD = (intAtSign + 1);
int intlengthD = (intStringSize - intstartIndexD);
string strDomain = stremailaddress.Substring(intstartIndexD, intlengthD);
Console.WriteLine("Username: " + strUsername);
Console.WriteLine("Domain: " + strDomain);