#include <ctype.h>
<ctype.h> provides prototypes for a number of routines that determine what type of character has been passed to the routine as an argument. Below we list the prototypes of these routines.
int isalnum(int c); int isalpha(int c); int iscntrl(int c); int isdigit(int c); int isgraph(int c); int islower(int c); int isprint(int c); int ispunct(int c); int isspace(int c); int isupper(int c); int isxdigit(int c); int tolower(int c); int toupper(int c);
Copyright © 1996, Thinkage Ltd.