### TASK: Debug Combinational Logic (Binary to Gray Code Converter)

### SPECIFICATION:
- Implement a Binary to Gray Code Converter.
- Inputs: 'binary' (N-bit binary number).
- Output: 'gray' (N-bit gray code).
- Behavior: 'gray' should be the gray code representation of 'binary'.

Binary code is the standard way of representing numbers in digital systems using bits (0s and 1s). Gray code is a modified binary representation where consecutive values differ by only one bit.