Printing values from Enum

Raskalnikov · 02-15-2009, 04:14 PM

I've been struggling with this for some time now. I searched the previous posts and I couldn't find an answer.

Consider the following.

Code:

enum meat {beef, pork, chicken, salmon };

Now

Code:

printf("%d", beef);

Will print 0. Is there anyway to use the value 0 to print "beef"?

MK27 · 02-15-2009, 04:22 PM

Not As Far As I Know. Great name tho, I hope you don't kill anyone with an axe

itCbitC · 02-15-2009, 04:23 PM

AFAIK I don't think so since those symbolic names don't exist at runtime.

vart · 02-16-2009, 12:16 AM

you need to maintain the list of strings yourself

Code:

const char* meetstr[]={"beef","pork", "chicken", "salmon"};
printf(%s",meetstr[beef]);

or some a little more advanced mapping if enums are not always start with 0 and continue flat

matsp · 02-16-2009, 04:33 AM

Surely that should be "meatstr"?

And as stated, the symbolic names do not exist in the binary unless you specifically produce code to translate the enum to strings.

--
Mats

vart · 02-16-2009, 07:13 AM

Quote:

Originally Posted by matsp

Surely that should be "meatstr"?

I do not know, I'm vegetarian

Snafuist · 02-16-2009, 08:56 AM

Quote:

Is there anyway to use the value 0 to print "beef"?

Not in this case, but you may switch to string arrays to obtain the desired behaviour.

If you need to start at a different value than 0, add an offset. If the integer values don't increase by 1, build your own structure for storing the stuff:

Code:

typedef struct {
        int index;
        char buf[1024];
} kv;

kv stuff[1024];

// ...

stuff[0].index = 17;
strcpy(stuff[0].buf, "snafu");

Greets,
Philip

Raskalnikov · 02-16-2009, 10:21 PM

Thanks for the replies. The exercises from the enum/typdef chapter in my C book asked for a lot of enum value printing. Consequently, this chapter is before the array chapter so it took a lot of switch statements.

Oh and thanks MK27. I'm picking up C in jail, Sonia says its good for me.

MK27 · 02-16-2009, 10:28 PM

Quote:

Originally Posted by Raskalnikov

Oh and thanks MK27. I'm picking up C in jail, Sonia says its good for me.

Don't catch consumption!

02-15-2009, 04:14 PM	#1
Raskalnikov Registered User Join Date: Feb 2009 Posts: 14	Printing values from Enum I've been struggling with this for some time now. I searched the previous posts and I couldn't find an answer. Consider the following. Code: enum meat {beef, pork, chicken, salmon }; Now Code: printf("%d", beef); Will print 0. Is there anyway to use the value 0 to print "beef"?
Raskalnikov is offline

02-15-2009, 04:22 PM	#2
MK27 subminimalist Join Date: Jul 2008 Location: NYC Posts: 3,944	Not As Far As I Know. Great name tho, I hope you don't kill anyone with an axe __________________ Accuracy and integrity mean nothing if you don't make it past the censors...PYTHAGORAS
MK27 is offline

02-15-2009, 04:23 PM	#3
itCbitC Registered User Join Date: Oct 2008 Location: TX Posts: 1,262	AFAIK I don't think so since those symbolic names don't exist at runtime.
itCbitC is offline

02-16-2009, 12:16 AM	#4
vart CSharpener Join Date: Oct 2006 Posts: 5,242	you need to maintain the list of strings yourself Code: const char* meetstr[]={"beef","pork", "chicken", "salmon"}; printf(%s",meetstr[beef]); or some a little more advanced mapping if enums are not always start with 0 and continue flat __________________ If I have eight hours for cutting wood, I spend six sharpening my axe.
vart is offline

02-16-2009, 04:33 AM	#5
matsp Kernel hacker Join Date: Jul 2007 Location: Farncombe, Surrey, England Posts: 15,686	Surely that should be "meatstr"? And as stated, the symbolic names do not exist in the binary unless you specifically produce code to translate the enum to strings. -- Mats __________________ Compilers can produce warnings - make the compiler programmers happy: Use them! Please don't PM me for help - and no, I don't do help over instant messengers.
matsp is offline

02-16-2009, 10:21 PM	#8
Raskalnikov Registered User Join Date: Feb 2009 Posts: 14	Thanks for the replies. The exercises from the enum/typdef chapter in my C book asked for a lot of enum value printing. Consequently, this chapter is before the array chapter so it took a lot of switch statements. Oh and thanks MK27. I'm picking up C in jail, Sonia says its good for me.
Raskalnikov is offline

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
C# Printing Problem	silverlight001	C# Programming	0	03-23-2009 01:13 AM
Controlling variable values by printing on file	p3rry	C Programming	8	12-17-2008 10:09 AM
Need help with project	chrisa777	C++ Programming	5	06-19-2006 05:01 PM
Printing enum field symbolically	pdc	C Programming	3	07-05-2005 12:51 AM
Switch case and enum help	SomeCrazyGuy	C++ Programming	9	04-21-2005 08:53 PM