[英]Initializing array inside struct - C?
Seem to have a memory allocation problem and think it's because in my struct, there is a pointer to an array of another struct. 似乎有一个内存分配问题,并认为这是因为在我的结构中,有一个指向另一个结构的数组的指针。 However, I'm not initializing this array and not sure how:
但是,我没有初始化此数组,也不知道如何:
typedef struct listitem {
struct listitem *next;
Entry *entry;
} ListItem;
typedef struct list {
ListItem *table[100];
} List;
List *initialize(void)
{
List *tmp;
if ((tmp = (List *)malloc(sizeof(List))) == NULL)
return NULL;
return tmp;
}
Hope that makes sense and you could help! 希望这有道理,您可以提供帮助!
You will need to call malloc again. 您将需要再次调用malloc。
typedef struct listitem {
struct listitem *next;
Entry *entry;
} ListItem;
typedef struct list {
ListItem *table[100];
} List;
List *initialize(void)
{
List *tmp;
if (!(tmp = (List *)malloc(sizeof(List))))
return NULL;
for(int i = 0; i < 100; i++) {
tmp->table[i] = (ListItem*)malloc(sizeof(ListItem));
}
return tmp;
}
bzero(tmp, sizeof(*tmp));
just zeroes the contents of your struct list. 只是将结构列表的内容清零。 If that is what you want.
如果那是您想要的。
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