number guessing game

# 1.1 print student name
print("Student Name: Chiu Yin Shan")

# 1.2 Randomly generate the answer between 1 and 100
import random
answer = random.randint(1, 100)
#print(answer)
lower_bound = 1
upper_bound = 100

# 1.3 print range as instruction 
print(f"Guess a number between {lower_bound} and {upper_bound}.")

# 1.4 check whether is number
def is_number(user_input):
    """Check if the input is a valid number (integer)."""
    try:
        return int(user_input)
    except ValueError:
        return None
    
# 1.5 loop & if-else to check
while True:
    # Ask user for input and validate
    user_input = input(f"Enter a number ({lower_bound}-{upper_bound}): ")
    number = is_number(user_input)

    # Check if input is a valid number
    if number is None:
        print("Invalid input. Please enter an integer.")
        continue

    # 1.5.1 out of range
    if number < lower_bound or number > upper_bound:
        print(f"Please enter a number within {lower_bound}-{upper_bound}.")
        continue

    # Compare with the answer
    if number == answer:
        print(f"Congratulations! The correct answer is {answer}.")
        break
    elif number < answer:
        lower_bound = number 
    else:
        upper_bound = number 

    print(f"Sorry, good try! The new range is {lower_bound}-{upper_bound}. Try again!")