iswupper()
Test a character to see if it's an uppercase letter
Synopsis:
#include <wctype.h>
int iswupper( wint_t wc );
Arguments:
- wc
- The wide character you want to test.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The iswupper() function tests if the argument wc is an uppercase wide character of the class upper. In the C locale, this class includes the characters from A through Z.
Returns:
A nonzero value if the character is a member of the class upper, or 0 otherwise.
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | Yes |
| Signal handler | Yes |
| Thread | Yes |
Caveats:
The result is valid only for wchar_t arguments and WEOF.