static void Main(string[] args)
{
MyString s1 = new MyString("abc, defgabc! ijk...");
MyString s2 = new MyString("ab cdefgjhkkf kk");
s1.SetOwner("abc", "Mike", "Example Corp.");
s2.SetOwner("dgc", "Bob", "ABC Corp.");
s1.SetDate(23, 6, 2001);
s2.SetDate(26, 4, 1986);
Console.WriteLine(s1 < s2);
Console.WriteLine(s1 + 5);
Console.WriteLine(--s2);
Console.WriteLine(s2 * 'd');
Console.WriteLine(s1[2]);
MyString s3 = new MyString("abcd /efgh");
Console.WriteLine($"{s1.ServiceCheck()}\n{s3.ServiceCheck()}");
Console.WriteLine(s1.DeletePunctuation());
}
