静态结构初始化C

Question

i read already some answers on stackoverflow but I don't know why it still doesn't work :

typedef struct gnl_struct {
    char        *data;
    int         where;
    int         status;
}               t_gnl;

void display_elem(t_gnl tab, int nbr)
{
    printf("tab[%d]\n", nbr);
    printf("tab.where == %d\n", tab.where);
    printf("tab.status == %d\n", tab.status);

    return ;
}

int     main()
{
    static t_gnl    tab[1000] = {{ "toto", 0, 2 }} ;

    display_elem(tab[3], 3);

    return (0);
}

the result is :

tab[3]
tab.where == 0
tab.status == 0

Answer 1

In your code, you've (yourself) initalized only tab[0] and you're passing tab[3] . All the other elements in the array [ tab[1] to tab[999] ] are auto initalized to 0 .

Answer 2

您仅初始化了第一个数组元素，因此其余元素将隐式地填充为0。现在，当您尝试打印第三个元素时，它将为零。