Question

I have a struct which has several arrays within it. The arrays have type unsigned char[4].

I can initialize each element by calling

struct->array1[0] = (unsigned char) something;
... 
struct->array1[3] = (unsigned char) something;

Just wondering if there is a way to initialize all 4 values in one line.

SOLUTION: I needed to create a temporary array with all the values initialized, then call memset() to copy the values to the struct array.

Answer 1

If the values are the same, you might do something like

struct->array[0] = struct->array[1] = struct->array[2] = struct->array[3] = (unsigned char) something;

Otherwise, if the values are stored in an array, you can use the memcpy function like so

memcpy(struct->array, some_array, sizeof(struct->array));