63. Register Bitfields Using Struct Overlay

You are implementing a simulated 8-bit control register where each bit controls a feature. Rather than using masks, you’ll use a bitfield struct to access individual bits.

The register layout is as follows:

Your task is to:

• Define a union that overlays:
  • A struct with bitfields: enable, mode, interrupt
  • A raw uint8_t register
• Read values for enable, mode, interrupt from input
• Construct the struct, and print the final register as an 8-bit unsigned value

Assume:

• enable is 0 or 1
• mode ranges from 0–3
• interrupt is 0 or 1
   

Example-1

Input: 1 2 1
Output: 13

Explanation:

• Binary = 00001101 → enable=1, mode=10, interrupt=1
   

Example-2

Input: 0 0 1
Output: 8

Binary = 00001000