def reverse_number(num):
    reverse = 0
    while num > 0:
        digit = num % 10
        reverse = reverse * 10 + digit
        num //= 10
    print("Reversed Number:", reverse)

# Example usage
reverse_number(1234)

Reversed Number: 4321

# Count the Digits in a Number

def count_digits(num):
    count = 0
    while num > 0:
        num //= 10
        count += 1
    print("Number of digits:", count)

# Example usage
count_digits(12345)

Number of digits: 5