无效的初始值设定项：将值从结构分配给结构数组时

Question

Suppose I have two structs. One struct is a simple struct with a set of elements.

typedef struct __attribute__ ((packed)) {
        float a1;
        float a2;
        uint32_t b1;
        uint32_t b2;
} item;

Other struct is simply an array of previous struct item .

typedef struct __attribute__ ((packed)) {
        item item_queue[65000];
} item_arr;

What I need to do is to get an element from item_arr and assign it to an array of item s. I'm trying to achieve it in this way.

item_arr profile_arr[16] = {0};

After assigning values to profile_arr, I assigned an element from item_arr to new item array.

item temp_q[65000] = profile_arr[0].item_queue;

But This gives me error: invalid initializer .

Am I doing the initialization in a wrong way? Any help would be appreciated.

Answer 1

If you just want to copy profile_arr[0].item_queue to temp_q , you can use memcpy .

void * memcpy ( void * destination, const void * source, size_t num );

memcpy(temp_q, profile_arr[0].item_queue, sizeof(temp_q));