C Union Example: Understanding Size and Member Access

The output of the code will be:\n\n4\n12\n\nExplanation:\n- The first printf statement will print the value of x which is 4.\n- The sizeof(a) statement will print the size of the union a, which is 12 bytes. This is because the union contains a struct with three int members (x, y, z) which each occupy 4 bytes, and an additional int member (k) which also occupies 4 bytes. Therefore, the total size of the union is 12 bytes.