The Perfect Guess Game

Overview
A number guessing game where the player has 5 initial attempts to guess a randomly chosen number (1-100), followed by a bonus 3 tries with a hint if they fail the first round.

Key Features
Input Validation: Checks that guesses are valid digits within the 0-100 range
Two-Round Gameplay:
Round 1: 5 attempts to guess the number
Round 2: 3 bonus attempts with an even/odd hint
Feedback System: Provides “Higher/Lower” hints after each wrong guess
Win Condition: Player succeeds if they guess correctly in either round

Code Structure
Initialization: Sets up flags (z, x, y) and generates random number
Round 1 Loop: Main guessing loop with 5-try limit
Hint System: Displays parity hint (even/odd) after Round 1 failure
Round 2 Loop: Bonus round with 3-try limit and carry-over hint
End Game: Reveals the correct number if player exhausts all attempts