Numerical Digits - Python Programming Exercise

This Python program demonstrates how to calculate the number of digits in a positive integer by repeatedly dividing the number by 10. If the user enters a negative integer, the program will display a warning message and proceed to calculate the number of digits for the equivalent positive integer. This solution is a great way to practice conditional statements and loops in Python, as well as handling user input validation effectively. With this program, you'll learn to handle both positive and negative integers and extract key information efficiently. In this Python exercise, the program prompts the user to input a number, then calculates how many digits the number has by performing a series of divisions. The program will also manage edge cases, such as handling negative numbers, by converting them to their positive equivalent and informing the user of the input's sign. This simple yet powerful task enhances your understanding of integer manipulation and error handling in Python, making it an essential addition to any beginner’s learning journey.

 Category

Mastering Flow Control

 Exercise

Numerical Digits

 Objective

Develop a Python program to calculate the number of digits in a positive integer (hint: this can be done by repeatedly dividing by 10). If the user enters a negative integer, the program should display a warning message and proceed to calculate the number of digits for the equivalent positive integer.

For example:
Number = 32
2 digits
Number = -4000
(Warning: it is a negative number) 4 digits

 Example Python Exercise

 Copy Python Code 
# Prompt the user to enter a number
num = int(input("Please enter a number: "))

# Check if the number is negative
if num < 0:
    print("Warning: it is a negative number")
    num = abs(num)  # Convert the number to its positive equivalent

# Initialize the digit counter
digits = 0

# Use a while loop to count the number of digits
while num > 0:
    num //= 10
    digits += 1

# Display the number of digits
print(f"{digits} digits")

 Output

Please enter a number: 32
2 digits

Please enter a number: -4000
Warning: it is a negative number
4 digits

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