將一個結構數組復制到另一個較小的結構數組

Question

我的結構體數組有5個插槽

struct router* router[5];

可以說其中有元素，然后我

router[3] = NULL;

是否可以重新排列陣列，以使router [4]中的元素上移到router [3]，router [5]移到router [4]等？

Answer 1

嘗試這個

void delete(struct router** router, int which, int size) {
    int i;
    // If these pointers have no other references to them then
    // Then you should free the one being deleted at this point
    for(i = which; i < size - 1; i++) {
       router[i] = router[i + 1];
    }
    router[i] = NULL;

}