ininitialize

Hey guys wat pointers would i have to initialize to NULL?

Code:

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typedef struct category* CategoryTypePtr;
typedef struct item* ItemTypePtr;

/* Structure definitions. */
typedef struct price
{
  unsigned dollars;
  unsigned cents;
} PriceType;

typedef struct item
{
  char itemID[ID_LEN + 1];
  char itemName[MAX_NAME_LEN + 1];
  PriceType prices[NUM_PRICES];
  char itemDescription[MAX_DESC_LEN];
  ItemTypePtr nextItem;
} ItemType;

typedef struct category
{
  char categoryID[ID_LEN + 1];
  char categoryName[MAX_NAME_LEN + 1];
  char drinkType;      /* (H)ot or (C)old. */
  char categoryDescription[MAX_DESC_LEN];
  CategoryTypePtr nextCategory;
  ItemTypePtr headItem;
  unsigned numItems;
} CategoryType;

typedef struct gjc
{
  CategoryTypePtr headCategory;
  unsigned numCategories;
} GJCType;

int commandLineArguments(int argc, char* argv[]);
int countToken(FILE *fp, char* temp, int tokenPerLine);
#endif

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Quote:

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Originally Posted by bazzano

Hey guys wat pointers would i have to initialize to NULL?

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What about all of them unless they aren't initialized to another value ?
Kurt

so its only the variables inside the structs that need to be initialized along with the pointers

Structures are just like any other variable. They're uninitialized when allocated, unless you take specific steps to make it otherwise. Thus, if a variable is not specifically set to some value, then it has some arbitrary value.


Quzah.