iswalnum
iswalnum
Defined in header <wctype.h> | ||
|---|---|---|
int iswalnum( wint_t ch ); | (since C95) |
Checks if the given wide character is an alphanumeric character, i.e. either a number (0123456789), an uppercase letter (ABCDEFGHIJKLMNOPQRSTUVWXYZ), a lowercase letter (abcdefghijklmnopqrstuvwxyz) or any alphanumeric character specific to the current locale.
Parameters
| ch | - | wide character |
Return value
Non-zero value if the wide character is a alphanumeric character, zero otherwise.