60. Register Overlay byte and bitfield

 Your task is to define a union that allows accessing an 8-bit register both as a raw byte and as individual bitfields.

• The union should contain:
  • uint8_t raw
  • A struct with fields:
    • unsigned en:1;
    • unsigned mode:3;
    • unsigned reserved:4;
       
• The program will assign a value to the union and then print the en and mode fields.
  
   

Example
 Input:

13

Output:

en=1 mode=6

Explanation:

• 13 = 0b00001101
• en = bit0 = 1

mode = bits[1..3] = 110b = 6