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- isalnum
-
alpha numeric (letter, digit)
- isalpha
-
alpha (letter)
- iscntrl
-
control
- isdigit
-
digit
- isgraph
-
graphic (printable except for space)
- islower
-
lower case letter
- isprint
-
printable
- ispunct
-
punctuation
- isspace
-
white space
- isupper
-
upper case letter
- isxdigit
-
hexadecimal digit
- tolower
-
lower case
- toupper
-
upper case
Tep Dobry
Mon Dec 9 05:56:25 HST 1996