A startup disk cannot be detected when booting a computer. The disk's pressence is reported by the system firmware, But Windows
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Using the knowledge in computational language in python it is possible to write a code that computes an integer's checksum.
<h3>Writting the code:</h3><em>def checkSum(n): # Function definition</em>
<em> total = 0 # total variable which returns sum</em>
<em> c = 0 # counter variable which count the even position</em>
<em> while(n!=0): # running a loop while n != 0</em>
<em> r = int(n%10) #breaking the number into digits</em>
<em> c=c+1 # increase counter</em>
<em> if c%2==0: # if counter is even position then double the number </em>
<em> r = r*2</em>
<em> while(r!=0): # do the process</em>
<em> total = total + int(r%10)</em>
<em> r = int(r/10)</em>
<em> n=int(n/10) </em>
<em> else: # if counter is odd position then simple add the digit </em>
<em> total = total + r # into total</em>
<em> n=int(n/10)</em>
<em> return total # in the last return the sum of digits</em>
<em># Driver code</em>
<em>n = int(input("Enter Number:")) # asking user to enter the number </em>
<em>print(checkSum(n)) # calling the function</em>
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Answer:
Explanation:
The following Python code creates all of the necessary functions in order to request and validate all of the inputs from the user. Once everything is entered and validated it calculates the total fee and outputs it to the user. Also calls the entire class at the end using a test variable...
class Customer:
library_card = 0
patrons_name = ""
patrons_address = ""
type_of_book = ""
book_title = ""
days_overdue = 0
fee = 0.0
book_list = ['paperback regular', 'paperback best seller', 'magazine', 'hardcover']
def __init__(self):
self.library_card = self.get_library_card()
self.patrons_address = input("Patron's Address: ")
self.book_title = input("Book Title: ")
self.type_of_book = self.get_type_of_book()
self.days_overdue = float(self.get_days_overdue())
self.calculate_total()
print("Your total Fee is: " + str(self.fee))
def get_library_card(self):
library_card = int(input("Enter 4-digit library card number: "))
if (type(library_card) == type(0)) and (len(str(library_card)) == 4):
return library_card
else:
print("Invalid Card number:")
self.get_library_card()
def get_type_of_book(self):
type_of_book = input("Type of Book 1-4: ")
if (int(type_of_book) > 0) and (int(type_of_book) <= 4):
return int(type_of_book)
else:
print("Invalid Type")
self.get_type_of_book()
def get_days_overdue(self):
days_overdue = input("Number of Days Overdue: ")
if int(days_overdue) >= 0:
return days_overdue
else:
print("Invalid number of days")
self.get_days_overdue()
def calculate_total(self):
if self.type_of_book == 1:
self.fee = 0.20 * self.days_overdue
if self.fee > 8:
self.fee = 8
elif self.type_of_book == 2:
self.fee = 0.50 * self.days_overdue
if self.fee > 15:
self.fee = 15
elif self.type_of_book == 3:
self.fee = 0.25 * self.days_overdue
if self.fee > 5:
self.fee = 5
else:
self.fee = 0.30 * self.days_overdue
if self.fee > 23:
self.fee = 23
test = Customer()
