```
#include <acheam.h>
-char * toupperw(char *);
-char * tolowerw(char *);
+char * toupperw(char *input);
+char * tolowerw(char *input);
```
# DESCRIPTION
instead of just single characters.
# RETURN VALUE
-A pointer to the converted string.
+A pointer to the converted string. This string is allocated with calloc(3), so
+be sure to free(3) it!
# SEE ALSO
toupper(3), tolower(3)