Question

python If the checksum is 10, the last digit is denoted as X according to the ISBN-10 convention. Write a program that prompts the user to enter the first 9 digits and displays the 10-digit ISBN (including leading zeros).

Answer 1

PYTHON CODE:

str = input("Enter the first 9 digits of an ISBN-10 as a string : ") # user input

i = 1

checksum = 0 # for total sum

while i < 10:

c = int(str[i - 1]) # getting every digit of the ISBN

c = c * i

checksum += c

i=i+1

checksum=checksum % 11 # getting the last digit of ISBN

ch=checksum

if checksum==10: # if the last digit is 10 then change it to X

ch="X"

print("The Complete 10-Digit ISBN is : ",end="")

print(str,end="") # displaying the 9 digit of ISBN

print(ch) # appending the last digit of ISBN

Step-by-step explanation: