Website hosting service by Active-Venture.com
  

 Back to Index

Character classes

isALNUM

Returns a boolean indicating whether the C char is an ASCII alphanumeric character (including underscore) or digit.

  
	bool	isALNUM(char ch)

isALPHA

Returns a boolean indicating whether the C char is an ASCII alphabetic character.

  
	bool	isALPHA(char ch)

isDIGIT

Returns a boolean indicating whether the C char is an ASCII digit.

  
	bool	isDIGIT(char ch)

isLOWER

Returns a boolean indicating whether the C char is a lowercase character.

  
	bool	isLOWER(char ch)

isSPACE

Returns a boolean indicating whether the C char is whitespace.

  
	bool	isSPACE(char ch)

isUPPER

Returns a boolean indicating whether the C char is an uppercase character.

  
	bool	isUPPER(char ch)

toLOWER

Converts the specified character to lowercase.

  
	char	toLOWER(char ch)

toUPPER

Converts the specified character to uppercase.

  
	char	toUPPER(char ch)

 

  

 

Domain name registration - 
Register cheap domain name from $7.95 and enjoy free domain services 
 

Cheap domain name search service -
Domain name services at just
$8.95/year only
 

Register domain name -
Buy domain name registration and cheap domain transfer at low, affordable price.

© 2002-2004 Active-Venture.com Web Site Hosting Service

 

[ In headlines today, the dreaded killfile virus spread across the country adding 'aol.com' to people's Usenet kill files everywhere. The programmer of the virus still remains anonymous, but has been nominated several times for a Nobel peace prize.   ]

 

 
 
 

Disclaimer: This documentation is provided only for the benefits of our web hosting customers.
For authoritative source of the documentation, please refer to http://www.perldoc.com