static void Main(string[] args)
{
Console.OutputEncoding = Encoding.UTF8;
Console.InputEncoding = Encoding.UTF8;
int num = 153;
Ex001_InformationOfNumber infoNum = new Ex001_InformationOfNumber(num);
Console.WriteLine(infoNum.ToString());
dynamic lastName = "Chand";
dynamic dynAuthor = new Author();
Console.WriteLine(dynAuthor.FullNameMethod(lastName));
string strShow = String.Format(" Space of string: {0} ", ExerciseString.nbOfSpace(infoNum.ToString()));
Console.WriteLine(strShow);
ExerciseString.removeSpaceReduntion(ref strShow);
Console.WriteLine(strShow);
ExerciseString.concatString(ref strShow, "abc");
Console.WriteLine(strShow);
ExerciseString.stringLower(ref strShow);
Console.WriteLine(strShow);
//ExerciseString.stringUpper(ref strShow);
//Console.WriteLine(strShow);
ExerciseString.upperCharacterStartWord(ref strShow);
Console.WriteLine(strShow);
ExerciseString.upperAndLowerCharacterAlternate(ref strShow);
Console.WriteLine(strShow);
Console.ReadKey();
}