Return structure with flexible array member

Question

I need to return a structure with a flexible array member from a C function but can\'t figure out why it doesn\'t compile. I know that returning arrays can be achieved by en

Answer 1

struct data_array * test(long length) {
    struct data_array *a = calloc(1,sizeof(struct data_array) + length*sizeof(double));
    a->length = length;
    return a;
}