C Library Functions: Character Case Mapping

Function Header File Description
strlwr string.h Converts any uppercase letters in a string to lowercase.
strupr string.h Converts any lowercase letters in a string to uppercase.
_toascii ctype.h Converts a value to its ASCII character equivalent.
tolower ctype.h Converts a character to lowercase.
_tolower ctype.h Converts an uppercase ASCII character to lowercase.
toupper ctype.h Converts a character to uppercase.
_toupper ctype.h Converts a lowercase ASCII character to uppercase.
towctrans wctype.h Performs wide-character mapping using wctrans.**
towlower wctype.h Converts an uppercase wide character to a lowercase.
towupper wctype.h Converts a lowercase wide character to uppercase.
wctrans wctype.h Describes a wide-character mapping.**


Alphabetical Listing of IBM C and C++ Compilers Functions and Macros