06.08.2013 Views

pSOSystem System Calls - Read

pSOSystem System Calls - Read

pSOSystem System Calls - Read

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

pREPC+ <strong>System</strong> <strong>Calls</strong> isalnum<br />

isalnum Tests for an alphanumeric character.<br />

#include <br />

int isalnum(<br />

int c /* character */<br />

)<br />

Description<br />

Arguments<br />

Return Value<br />

Error Codes<br />

Notes<br />

See Also<br />

This function tests the value in c (converted to an unsigned char) to see if it is an<br />

alphanumeric character. An alphanumeric character is a character for which either<br />

isdigit or isalpha is true.<br />

c Specifies the value to be tested.<br />

This function returns a nonzero value if the test result is true. It returns a 0 if the<br />

result is false.<br />

Refer to Appendix B.<br />

Callable From<br />

■ Task<br />

■ ISR<br />

isalpha, isdigit<br />

<strong>pSO<strong>System</strong></strong> <strong>System</strong> <strong>Calls</strong> 3-75<br />

3

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!