Isalpha, Iscntrl, Isdigit – Zilog ZUSBOPTS User Manual
Page 448: Isalpha iscntrl isdigit, Synopsis, Example
Standard Functions
UM017105-0511
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Zilog Developer Studio II – ZNEO™
User Manual
isalpha
Tests for any character for which
isupper
or
islower
is true.
Synopsis
#include
int isalpha(int c);
Example
int r;
char c='a';
r=isalpha(c);
iscntrl
Tests for any control character.
Synopsis
#include
int iscntrl(int c);
Example
int r;
char c=NULL;
r=iscntrl(c);
isdigit
Tests for any decimal digit.
Synopsis
#include
int isdigit(int c);
Example
int r;
char c='4';
r=isdigit(c);