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__iscsym, __iscsymf

int __iscsym( 
   int c 
);
int __iscsymf( 
   int c 
);

Parameter

c
Integer to test. c should be in the range of 0-127.

Return Value

__iscsym returns a non-zero value if c is a letter, underscore, or digit. __iscsymf returns a non-zero value if c is a letter or an underscore. Each of these routines returns 0 if c does not satisfy the test condition.

The result of the test condition for the __iscsym function depends on the LC_CTYPE category setting of the current locale; see setlocale for more information. For __iscsymf, the result of the test condition is independent of locale.

Requirements

Routine Required header Compatibility
__iscsym <ctype.h> Win 98, Win Me, Win NT, Win 2000, Win XP
__iscsymf <ctype.h> Win 98, Win Me, Win NT, Win 2000, Win XP

For additional compatibility information, see Compatibility in the Introduction.

Libraries

All versions of the C run-time libraries.

See Also

Character Classification Routines | Locale Routines | is, isw Function Overview | Run-Time Routines and .NET Framework Equivalents

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