isalnum
Synopsis
#include <ctype.h>
int isalnum(int c);
Status
Implemented
Conformance
IEEE Std 1003.1-2017
Description
The isalnum() function shall test whether c is a character of class alpha or digit in the current locale.
The c argument is an int, the value of which the application shall ensure is representable as an unsigned char or
equal to the value of the macro EOF. If the argument has any other value, the behavior is undefined.
Return value
The isalnum() function shall return non-zero if c is an alphanumeric character, otherwise shall return 0.
Errors
No errors are defined.
Tests
Tested
Known bugs
None