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A check digit is the number at the end of a series of characters that can confirm that something is correct - Scottish Highers Computing Science - Question 10 - 2023
Question 10
A check digit is the number at the end of a series of characters that can confirm that something is correct. A program is to be written to add a check digit to a us... show full transcript
Worked Solution & Example Answer:A check digit is the number at the end of a series of characters that can confirm that something is correct - Scottish Highers Computing Science - Question 10 - 2023
Step 1
Step 2
Design an algorithm that would create the updated password and store it in a file.
Answer
- Initialise total: Set a variable
totalto 0. - Input password: Prompt the user to enter a password, storing it in the variable
password. - Loop through each character:
- For each character in
password, get its ASCII value usingord(character)and add it tototal.
- For each character in
- Calculate the remainder:
- Set
remaindertototal mod 11.
- Set
- Concatenate remainder:
- Append the
remainderto the end ofpassword, formingupdatedPassword = password + str(remainder).
- Append the
- Open file for writing:
- Open a file in write mode
output.txt.
- Open a file in write mode
- Write to file:
- Write
updatedPasswordto the file.
- Write
- Close file:
- Close the file.
Step 3
Describe two benefits of implementing modular code.
Answer
- Reusability: Modular code allows the reuse of code libraries in different programs, enhancing efficiency and productivity.
- Easier debugging: With modular code, errors are easier to locate and fix since each module can be tested independently.