delete all characters that aren't a letter or number Post: 302591877

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_tolower

conv(3C)																  conv(3C)

NAME

       toupper(), tolower(), _toupper(), _tolower(), toascii() - translate characters

SYNOPSIS

DESCRIPTION

       and  have as domain the range of getc(3S): the integers from -1 through 255.  If the argument of represents a lower-case letter, the result
       is the corresponding upper-case letter.	If the argument of represents an upper-case letter, the result	is  the  corresponding	lower-case
       letter.	All other arguments in the domain are returned unchanged.  Arguments outside the domain cause undefined results.

       The macros and are identical to and respectively.

       yields  its  argument  with  all  bits that are not part of a standard 7-bit ASCII character cleared; it is intended for compatibility with
       other systems.

WARNINGS

       is supplied both as a library function and as a macro defined in the header.  Normally, the macro version is used.  To obtain  the  library
       function, either use a to remove the macro definition or, if compiling in ANSI C mode, enclose the function name in parenthesis or take its
       address.  The following examples use the library function for

       or

       The following example use the library function for

EXTERNAL INFLUENCES

   Locale
       The category determines the translations to be done.

   International Code Set Support
       Single-byte character code sets are supported.

AUTHOR

       was developed by IBM, OSF, and HP.

SEE ALSO

       ctype(3C), getc(3S), setlocale(3C), lang(5), thread_safety(5).

STANDARDS CONFORMANCE

																	  conv(3C)

10 More Discussions You Might Find Interesting

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Delete specific characters

Discussion started by: masquerer

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Delete lines that starts with a certain letter

Discussion started by: kingpeejay

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How to delete characters using a file

Discussion started by: krishna_gnv

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Check input for lenght, special characters and letter case

Discussion started by: waso