If no documentation for analysis, design, testing and evaluation has been requested for this challenge then some of the assessments for these criteria can be implied through the solution given e.g. have all of the tasks and sub-tasks been identified? Have all of the inputs and outputs been identified? Does the solution produce the expected output with normal, extreme and boundary data?

The following should be included in the solution:

There should be a minimum of 5 questions with 4 alternative answers.
The user should be able to select an option for each question and their choice should be validated.
The user should be told their score and the correct answers for those answered incorrectly.
For the extension, the user should be able to input their name and their name and score should be saved in a text file.

There are different possible algorithms that can be designed. The one shown uses the basic constructs studied in previous chapters.

Answer:

#This sample solution shows only the first two questions. Questions 3 to 5 would be written as the ones shown.

OUTPUT "Please enter your name. "

name ← USERINPUT

score ← 0

array incorrectQuestions ← []                         #This array will save question numbers of those answered incorrectly.

array correctAnswers ← []                             #This array will save the correct answers for thiose answered incorrectly.

OUTPUT

OUTPUT "Please select the option that contains the correct answer for the following questions."

OUTPUT

OUTPUT "Question1:"

pOUTPUT

OUTPUT "What is meant by an embedded system?"

OUTPUT "A" + "	" + "A system inside a computer.") # "	" will insert a tab.

OUTPUT "B" + "	" + "A system containing a processor."

OUTPUT "C" + "	" + "A computer system built within a another device to control it."

OUTPUT "D" + "	" + "A computer system that can be programmed."

OUTPUT

answer1 ← ""                                       #A variable to hold the user's answer.

WHILE answer1 = ""

     OUTPUT "Please input the letter of the correct answer: "                 #A 'while' loop is used to validate the entry.

    answer1 ← USERINPUT

     IF answer1 ≠ "A" AND answer1 ≠ "B" AND answer1 ≠ "C" AND answer1 ≠ "D" THEN

          OUTPUT "Your choice is not recognised."

          answer1 ← ""

     ENDIF



ENDWHILE

IF answer1 = "C" THEN

     score ← score + 1

ELSE

#If the answer is incorrect then the question number and the correct answer are appended to the arrays.

     incorrectQuestions.append("1")

     correctAnswers.append("A computer system built within a another device to control it.")

endif



#Question 2

OUTPUT

OUTPUT "Question2:"

OUTPUT

OUTPUT "The component of the CPU used to store data items is the..."

OUTPUT "A" + "	" + "Control unit."

OUTPUT "B" + "	" + "Arithmetic and logic unit."

OUTPUT "C" + "	" + "Bus."

OUTPUT "D" + "	" + "Registers."

OUTPUT

answer2 = ""

WHILE answer2 = ""

     OUTPUT "Please input the letter of the correct answer:

     answer2 ← USERINPUT

     IF answer2 ≠ "A" AND answer2 ≠ "B" AND answer2 ≠ "C" AND answer2 ≠ "D" THEN

          OUTPUT "Your choice is not recognised."

          answer2 ← ""

     ENDIF

UNDWHILE

IF answer2 = "D" THEN

     score ← score + 1

ELSE

     incorrectQuestions.append("2")

     correctAnswers.append("Registers.")

ENDIF



#Questions 3 to 5 would be written in the same way.

#The following code would be written after the last question.

OUTPUT "Hi " + name + ". Your score is " + score + "/5."



IF LEN(incorrectQuestions) > 0:       #This will check if there are any incorrect answers and if there are it will print them and their correct answers for the user.

     OUTPUT "Here are the questions you got wrong with their correct answers."

     FOR index = 0 to LEN(incorrectQuestions) - 1

              OUTPUT "Question " + incorrectQuestions[index] + "	" + correctAnswers[index]

     ENDFOR

ENDIF

#Saving the data to a text file.

WRITELINE (name + ".txt", 1, name)  #The file name is given the name of the user and name is added.

WRITELINE (name + ".txt", 2, score)  #The score is added.