======Week 1======
  * Welcome!
  * Review, ask questions on C and pointers.
    * try writing sample code employing various concepts
    * pointers are a fixed size, regardless of data type
      * why? MEMORY ADDRESSING
      * on lab46 (running on a 64-bit OS/system), memory addresses are 64-bits (64/8 = 8 bytes)
        * so all pointers (whether char, int, float, etc.) will be 8 bytes in size on this system.
      * on other systems, notably 16-bit and 32-bit systems (especially late-era hardware that might have incorporated tweaks to support more memory than is typically accessible by the default machine word size), memory address sizes can vary.
      * takeaway: for code portability, do not assume 8 byte memory addresses. **ALWAYS** use **sizeof()** to maximize portability.