xxxxxx

enum

{

COIN_TYPE_NONE,

   COIN_TYPE_1FEN,

   COIN_TYPE_2FEN,

   COIN_TYPE_5FEN

};

typedef struct PiggyBank PiggyBank;

PiggyBank* PiggyBank_New( );

int PiggyBank_AddRefs(PiggyBank *pPiggyBank);

int PiggyBank_Release(PiggyBank *pPiggyBank);

void PiggyBank_Input(PiggyBank *pPiggyBank, int type);

void PiggyBank_Output(PiggyBank *pPiggyBank, int type);

int PiggyBank_GetTotal(PiggyBank *pPiggyBank, int type);

储蓄罐封装形式四：PiggyBank.c

struct PiggyBank

{

   int refs;       // reference count

   int count_1fen;

   int count_2fen;

   int count_5fen;

};

PiggyBank* PiggyBank_New( )

{

PiggyBank *pNew = MALLOC(sizeof(PiggyBank));

   if (pNew != NULL)

      MEMSET(pNew, 0x00, sizeof(PiggyBank));

   PiggyBank_AddRefs(pNew);

   return pNew;

}

static void PiggyBank_Free(PiggyBank **ppPiggyBank)

{

   … …

}

int PiggyBank_AddRefs(PiggyBank *pPiggyBank)

{

   … …

}

int PiggyBank_Release(PiggyBank *pPiggyBank)

{

   … …

}

void PiggyBank_Input(PiggyBank *pPiggyBank, int type)

{

   … …

}

void PiggyBank_Output(PiggyBank *pPiggyBank, int type)

{

   … …

}

int PiggyBank_GetTotal(PiggyBank *pPiggyBank, int type)

{

  … …

}