Dir c*.* shows the files whose first letter is c (other examples Dir v*.* will show files first letter v, Dir e*.* will show files first letter e)
Dir c*.exe will show/diplay all files with the first letter c with file extension exe.
The question mark is a character long.
Dir ?p*.* show files where the second character is letter p.
Dir ?x*.exe will show files where second character is x and extension .exe.
Dir ??? *.* will show third character or more.
Dir ???*.sys will show third character or more with an extension .sys.
Introducing a computer windows.
