Convert character to lowercase
#include <wctype.h> wint_t towlower( wint_t wc );
libc
The towlower() function converts wc to a lowercase letter if wc represents an uppercase letter.
The corresponding lowercase letter when the argument is an uppercase letter; otherwise, the original wide character is returned.
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | Yes |
| Signal handler | Yes |
| Thread | Yes |
"Character manipulation functions" and "Wide-character functions" in Library Reference Summary