iswupper()
QNX SDP8.0C Library ReferenceAPIDeveloper
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. This argument must be a wide-character code that corresponds to a valid character in the current locale, or must be WEOF; otherwise, the function's behavior is undefined.
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 |
| Signal handler | Yes |
| Thread | Yes |
Caveats:
The result is valid only for wchar_t arguments and WEOF.
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