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| _toupper| Summary | |
#include <ctype.h>
int _toupper (
int c); /* character to convert */
| | Description | | The _toupper routine is a macro version of toupper that may be used when c is known to be a lowercase character. | | Return Value | | The _toupper macro returns an uppercase character. | | See Also | | _tolower, tolower, toupper | | Example | |
#include <ctype.h>
void test__toupper (char k) {
if (islower (k)) k = _toupper (k);
}
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