#include <ctype.h>
int isdigit (char c);- DESCRIPTION
-
The isdigit function tests c to determine if it is a decimal digit (
'0'-'9'). - RETURN VALUE
-
The isdigit function returns a value of 1 if c is a decimal digit and a value of 0 if it is not.
- SEE ALSO
-
isalnum, isalpha, iscntrl, isgraph, islower, isprint, ispunct, isspace, isupper, isxdigit
- EXAMPLE
link:src/isdigit.c[role=include]- OUTPUT
$ gcc -Wall isdigit.c $ ./a.out isdigit (.) NO isdigit (/) NO isdigit (0) YES isdigit (1) YES