isdigit

Tests for decimal character

#include <ctype.h>
long isdigit (
        long c
)

Arguments

c Input character

Return Value

A non-zero value is returned if the input character c is a decimal digit, otherwise 0 is returned.

Explanation

The character c is tested as to whether it is a decimal digit.

See Also

isalnum(), isalpha(), isascii(), iscntrl(), isgraph(), islower(), isprint(), ispunct(), isspace(), isupper(), isxdigit()