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c program

hello;
i want to know that where we use link list, function pointer, generic pointer in embedded programming

Parents

0 Christoph Franck over 17 years ago in reply to Drew Davis

If each case just calls a function, those functions might happen to have switch statement inside, but won't cause readability and indentation problems.

Exactly, thanks for guessing my thoughts.

#define STATE_INIT 0
#define STATE_WORK 1

void state_machine()
{
   static int current_state = STATE_INIT;

   switch(current_state)
   {
      case STATE_INIT:
         current_state = state_init();
         break;
      case STATE_WORK:
         current_state = state_work();
         break;
      default:
         current_state = STATE_INIT;
         break;
   }
}

int state_init()
{
   return(STATE_WORK);
}

int state_work()
{
   return(STATE_WORK);
}

Something along those lines.

Reply

0 Christoph Franck over 17 years ago in reply to Drew Davis

If each case just calls a function, those functions might happen to have switch statement inside, but won't cause readability and indentation problems.

Exactly, thanks for guessing my thoughts.

#define STATE_INIT 0
#define STATE_WORK 1

void state_machine()
{
   static int current_state = STATE_INIT;

   switch(current_state)
   {
      case STATE_INIT:
         current_state = state_init();
         break;
      case STATE_WORK:
         current_state = state_work();
         break;
      default:
         current_state = STATE_INIT;
         break;
   }
}

int state_init()
{
   return(STATE_WORK);
}

int state_work()
{
   return(STATE_WORK);
}

Something along those lines.

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