isalnum() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for alphanumeric characters. |
isalpha() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for alphabetic characters. |
isascii() |
ctype.h |
isascii() — Test for Character Representable as ASCII Value |
Tests for ASCII values. |
isblank() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for blank or tab characters. |
iscntrl() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for control characters. |
isdigit() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for decimal digits. |
isgraph() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for printable characters excluding
the space. |
islower() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for lowercase letters. |
isprint() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for printable characters including
the space. |
ispunct() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for punctuation characters
as defined in the locale. |
isspace() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for white-space characters. |
isupper() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for uppercase letters. |
isxdigit() |
ctype.h |
isalnum() – isxdigit() — Test Integer Value |
Tests for wide hexadecimal digits 0 through 9, a through f,
or A through F. |