Embedded can be almost anything, C&#x2F;C++&#x2F;java and so on. I&#x27;ve seen microcontrollers with 8K of program space, written in C++. Why? Because it optimizes better than the &#x27;C&#x27; programmer does.<p>Unions are used for interpreting any kind of record stream. Reading serialized binary objects from a file? Use a union.  Network packets? A union.