ctype.h File Reference

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Functions
static int	islower (int c)
static int	isupper (int c)
static int	isalpha (int c)
static int	isdigit (int c)
static int	isalnum (int c)
static int	isxdigit (int c)
static int	isspace (int c)
static int	isblank (int c)
static int	isgraph (int c)
static int	isprint (int c)
static int	iscntrl (int c)
static int	isascii (int c)
static int	ispunct (int c)
static int	tolower (int c)
static int	toupper (int c)

Function Documentation

isalnum()

static int isalnum ( int  c )

inlinestatic

{ return isalpha (c) || isdigit (c); }

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isalpha()

static int isalpha ( int  c )

inlinestatic

{ return islower (c) || isupper (c); }

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isascii()

static int isascii ( int  c )

inlinestatic

{ return c >= 0 && c < 128; }

isblank()

static int isblank ( int  c )

inlinestatic

{ return c == ' ' || c == '\t'; }

iscntrl()

static int iscntrl ( int  c )

inlinestatic

{ return (c >= 0 && c < 32) || c == 127; }

isdigit()

static int isdigit ( int  c )

inlinestatic

{ return c >= '0' && c <= '9'; }

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isgraph()

static int isgraph ( int  c )

inlinestatic

{ return c > 32 && c < 127; }

islower()

static int islower ( int  c )

inlinestatic

{ return c >= 'a' && c <= 'z'; }

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isprint()

static int isprint ( int  c )

inlinestatic

{ return c >= 32 && c < 127; }

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ispunct()

static int ispunct ( int  c )

inlinestatic

                                  {
    return isprint (c) && !isalnum (c) && !isspace (c);
}

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isspace()

static int isspace ( int  c )

inlinestatic

                                  {
    return (c == ' ' || c == '\f' || c == '\n'
            || c == '\r' || c == '\t' || c == '\v');
}

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isupper()

static int isupper ( int  c )

inlinestatic

{ return c >= 'A' && c <= 'Z'; }

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isxdigit()

static int isxdigit ( int  c )

inlinestatic

                                   {
    return isdigit (c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
}

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tolower()

static int tolower ( int  c )

inlinestatic

{ return isupper (c) ? c - 'A' + 'a' : c; }

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toupper()

static int toupper ( int  c )

inlinestatic

{ return islower (c) ? c - 'a' + 'A' : c; }

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