#iscntrl()

DESCRIPTION
    returns TRUE if a character, or first character in a string, is a control character

SYNOPSIS
    #iscntrl(s)

ARGUMENTS
    s - a quoted string, or string expression

EXAMPLES

# pikt +C 'output $text(#iscntrl("a"))'
0

# pikt +C 'output $text(#iscntrl("A"))'
0

# pikt +C 'output $text(#iscntrl("9"))'
0

# pikt +C 'output $text(#iscntrl("!"))'
0

# pikt +C 'output $text(#iscntrl(" "))'
0

# pikt +C 'output $text(#iscntrl($char(3)))'
1

# pikt +C 'output $text(#iscntrl("is this a control character?"))'
0

SEE ALSO
    #isalnum()
    #isalpha()
    #isdigit()
    #isgraph()
    #islower()
    #isprint()
    #ispunct()
    #isspace()
    #isupper()

    Numerical Functions
    String Functions