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Full Discussion: enumeration types in C
Top Forums Programming enumeration types in C Post 302224138 by cleopard on Tuesday 12th of August 2008 09:25:07 AM
Old 08-12-2008
enumeration types in C
If I want to declare an array of structures in C and have the number of items in that array to correspond to the items of an enumeration, is there a way to access the maximum value in the enumeration when declaring the array?

For instance:

typedef struct
{
various fields....
} fruit_rec;

enum fruit_info {apple, orange, banana}

fruit_rec fruits[3];


Instead of hard-coding a '3' in the 'fruits' declaration, is there a way I can access the number of items in the enumeration? In the old DoD language, Ada, one could do something like, " fruit_rec fruits[fruit_info] " .

I don't think there is a way to do what I'm asking, but I thought I'd ask as it would be a cleaner way of declaring things. Even if I can't do something like that, I know I can still refer to the elements as "fruits[apple}" , "fruits[orange]", etc. Thank you.
 

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LEARN ABOUT DEBIAN

pegasus-dax-validator

PEGASUS-DAX-VALIDA(1)													     PEGASUS-DAX-VALIDA(1)

NAME

       pegasus-dax-validator - determines if a given DAX file is valid.

SYNOPSIS

       pegasus-dax-validator daxfile [verbose]

DESCRIPTION

       The pegasus-dax-validator is a simple application that determines, if a given DAX file is valid XML. For this, it parses the file with as
       many XML validity checks that the Apache Xerces XML parser framework supports.

OPTIONS

       daxfile
	   The location of the file containing the DAX.

       verbose
	   If any kind of second argument was specified, not limited to the string verbose, the verbose output mode is switched on.

RETURN VALUE

       If the DAX was parsed successfully, or only warning's were issued, the exit code is 0. Any 'error or fatal error will result in an exit
       code of 1.

       Additionally, a summary statistics with counts of warnings, errors, and fatal errors will be displayed.

EXAMPLE

       The following shows the parsing of a DAX file that uses the wrong kind of value for certain enumerations. The output shows the errors with
       the respective line number and column number of the input DAX file, so that one can find and fix them more easily. (The lines in the
       example were broken to fit the manpage format.)

	   $ pegasus-dax-validator bd.dax
	   ERROR in line 14, col 110: cvc-enumeration-valid: Value 'i386' is not
	    facet-valid with respect to enumeration '[x86, x86_64, ppc, ppc_64,
	    ia64, sparcv7, sparcv9, amd64]'. It must be a value from the
	    enumeration.
	   ERROR in line 14, col 110: cvc-attribute.3: The value 'i386' of
	    attribute 'arch' on element 'executable' is not valid with respect to
	    its type, 'ArchitectureType'.
	   ERROR in line 14, col 110: cvc-enumeration-valid: Value 'darwin' is
	    not facet-valid with respect to enumeration '[aix, sunos, linux, macosx,
	    windows]'. It must be a value from the enumeration.
	   ERROR in line 14, col 110: cvc-attribute.3: The value 'darwin' of
	    attribute 'os' on element 'executable' is not valid with respect to
	    its type, 'OSType'.

	   0 warnings, 4 errors, and 0 fatal errors detected.

SEE ALSO

       Apache Xerces-J http://xerces.apache.org/xerces2-j/

AUTHORS

       Jens-S. Vockler <voeckler at isi dot edu>

       Pegasus Team http://pegasus.isi.edu/

								    05/24/2012						     PEGASUS-DAX-VALIDA(1)
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