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ctype API

Standard C ctype API functions. More...

Functions

int isupper (int c)
 Check if character is uppercase letter.
 
int islower (int c)
 Check if character is lowercase letter.
 
int isalpha (int c)
 Check if character is alphabetic.
 
int isdigit (int c)
 Check if character is decimal digit.
 
int isalnum (int c)
 Check if character is alphanumeric.
 
int isspace (int c)
 Check if character is a white-space.
 
int iscntrl (int c)
 Check if character is a control character.
 
int isprint (int c)
 Check if character is printable.
 
int isgraph (int c)
 Check if character has graphical representation.
 
int ispunct (int c)
 Check if character is a punctuation.
 
int isxdigit (int c)
 Check if character is hexadecimal digit.
 
int toupper (int c)
 Convert lowercase letter to uppercase.
 
int tolower (int c)
 Convert uppercase letter to lowercase.
 

Detailed Description

Standard C ctype API functions.