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Per Westermark
10/25/11 01:48
Read: 553 times
Sweden


 
Msg Score: +1
 +1 Good Answer/Helpful
#184352 - consider enum
Responding to: Marshall Brown's previous message
I would recommend that you make use of the wonderful enum construct when you need to enumerate integer constants.

You should try to limit the use of #define to situations where enum can not be used - such as when you want to map a function name, a sequence of instructions, a text string or similar.

The following is nicer to use than a sequence of #define. If you do need to hard-code the mapping of symbol to integer value, then you can explicitly add a " = 1" or similar.

enum {
    actionEmpty,
    actionOn,
    actionOff,
    actionRegulate,
    actionPulse
};


Above is handled by the compiler, while below constructs are handled by the preprocessor:
#define RULE_ACTION_ON          1
#define RULE_ACTION_OFF         2
#define RULE_ACTION_REGULATE    3
#define RULE_ACTION_PULSE       4


List of 23 messages in thread
TopicAuthorDate
User entered recipes ???      Marshall Brown      10/24/11 13:35      
   Just create array of regular rules      Per Westermark      10/24/11 15:30      
      Thanks - that's great      Marshall Brown      10/24/11 17:35      
         programming language      Jan Waclawek      10/25/11 00:55      
            programming language - not really      Marshall Brown      10/25/11 01:21      
               consider enum        Per Westermark      10/25/11 01:48      
                  thanks - implemented.      Marshall Brown      10/25/11 02:23      
                     Intelligence      Per Westermark      10/25/11 02:34      
                        I must have a stupid compiler      Marshall Brown      10/25/11 03:05      
                           Not all compilers are as good at generate warnings      Per Westermark      10/25/11 03:28      
                              no warning/error on the compiler      Marshall Brown      10/25/11 03:55      
                                 response from Raisonance      Marshall Brown      10/27/11 09:51      
                  enumerations on 8051      Andy Peters      10/25/11 12:14      
                     enums are 8bit by default on Raisonance      Marshall Brown      10/25/11 12:42      
                        NULL      Jan Waclawek      10/26/11 04:08      
                           Could you show me the code      Marshall Brown      10/26/11 13:49      
                              compatibility et al      Jan Waclawek      10/27/11 04:15      
                                 why change pointer to CODE?      Marshall Brown      10/27/11 10:21      
                                    enum advantage      Michael Karas      10/27/11 11:18      
                                    user page does not work (at least for me)      Jan Waclawek      10/28/11 15:26      
                                       try it now      Marshall Brown      10/30/11 17:08      
                     re: enumerations on 8051      Andy Peters      11/01/11 15:22      
   Article on Hierarchical Menu Structure      Aubrey Kagan      11/02/11 09:42      

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