Name | Synopsis | Description | Return Values | Errors | Attributes | See Also
#include <ctype.h> int _toupper(int c);
The _toupper() macro is equivalent to toupper(3C) except that the argument c must be a lower-case letter.
On successful completion, _toupper() returns the upper-case letter corresponding to the argument passed.
No errors are defined.
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE |
ATTRIBUTE VALUE |
CSI |
Enabled |
Interface Stability |
Standard |
MT-Level |
MT-Safe |
Name | Synopsis | Description | Return Values | Errors | Attributes | See Also