<ctype.h> Character Handling

The header file ctype.h consists of functions that are useful for classifying and mapping characters. Characters are interpreted according to the Standard C locale.

isalnum Function
isalpha Function
isblank Function
iscntrl Function
isdigit Function
isgraph Function
islower Function
isprint Function
ispunct Function
isspace Function
isupper Function
isxdigit Function
tolower Function
toupper Function

Parent topic: Library Functions