Question

Using a post-test while loop, write a program that counts the number of digits in a user-entered integer.

HINT: The // operator performs integer division, whereas the / operator performs floating point division. So, 5/2 = 2.5, whereas 5 //2 = 2.

Python and CodeHs

Answer 1

Here is an example of a program that uses a post-test while loop to count the number of digits in a user-entered integer:

Step-by-step explanation:

# Get user input

num = int(input("Enter an integer: "))

# Initialize count to 0

count = 0

# Use post-test while loop

while num > 0:

# Increase count by 1

count += 1

# Update num by integer dividing by 10

num = num // 10

# Print the final count

print("The number of digits is:", count)

In this program, the user is prompted to enter an integer. The input is then stored in the variable "num". A variable "count" is initialized to 0 and this will be used to keep track of the number of digits in the integer. The post-test while loop continues to execute as long as the value of "num" is greater than 0. Inside the loop, the count is increased by 1 and the value of "num" is updated by integer dividing it by 10. The loop will continue until the value of "num" is less than or equal to 0. The final count is then printed.