Indicates if a character is classed as an uppercase character in the
program's current locale.
Format
#include <ctype.h>
int isupper (int character);
Argument
- character
- An object of type int. The value of character must be
representable as an unsigned char or must equal the value of the
macro EOF. If it has any other value, the behavior is undefined.
Return Values
| nonzero | If an uppercase alphabetic
character. |
| 0 | If not an
uppercase alphabetic character. |
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