Initialize values of array in a struct

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 you really mean "initialize" in the sense that you can do it at the time you declare the variable, then sure:

struct x {
  unsigned char array1[4];
  unsigned char array2[4];
};

struct x mystruct = { 
   { 1, 2, 3, 4 },
   { 5, 6, 7, 8 }
};

Answer 2

When you create the struct, you can initialise it with aggregate initialisation:

struct test {
    int blah;
    char arr[4];
};

struct test = { 5, { 'a', 'b', 'c', 'd' } };