02.03 Pseudocode And Flowcharts - Quiz

Check your understanding

1. What is the correct pseudocode pattern for a simple IF statement?

   • IF condition THEN statements END
   • IF condition THEN statements END IF { data-correct }
   • IF (condition) { statements }
   • IF condition: statements

2. Complete this pseudocode to calculate the area of a rectangle:

   ALGORITHM CalculateRectangleArea
   BEGIN
       INPUT length
       INPUT width
       _______________
       OUTPUT area
   END
   

   • area = length * width
   • SET area = length * width { data-correct }
   • CALCULATE area = length * width
   • LET area = length * width

3. What shape represents a decision/condition in a flowchart?

   • Rectangle
   • Oval
   • Diamond { data-correct }
   • Circle

4. Which PlantUML syntax correctly represents a decision in an activity diagram?

   • {age >= 18} then (yes) else (no)
   • if (age >= 18?) then (yes) else (no) { data-correct }
   • decision (age >= 18) yes/no
   • choice: age >= 18 | yes | no

5. What’s wrong with this pseudocode?

   IF score>=90 THEN grade="A" ELSE IF score>=80 THEN grade="B" END IF
   

   • Missing SET keywords
   • Poor formatting and indentation
   • Multiple actions on one line
   • All of the above { data-correct }

6. Complete this pseudocode for counting from 1 to 10:

   ALGORITHM CountToTen
   BEGIN
       SET count = 1
       ________________
           OUTPUT count
           SET count = count + 1
       ________________
   END
   

   • WHILE count <= 10 DO … END WHILE { data-correct }
   • FOR count = 1 TO 10 DO … END FOR
   • REPEAT count <= 10 … UNTIL
   • LOOP count <= 10 … END LOOP

7. Convert this natural language to pseudocode:

   “Ask for two numbers, multiply them together, and display the result.”

   • GET num1, num2; SHOW num1 * num2
   • INPUT num1, num2; OUTPUT num1 * num2
   • INPUT num1; INPUT num2; SET result = num1 * num2; OUTPUT result { data-correct }
   • READ num1, num2; PRINT num1 * num2

8. In PlantUML activity diagrams, what represents the start and end of the algorithm?

   • (start) and (end)
   • begin and finish
   • start and stop { data-correct }
   • :start: and :stop:

9. What’s the best way to represent this logic in pseudocode?

   “If it’s raining AND you don’t have an umbrella, get wet. Otherwise, stay dry.”

   • IF raining AND no umbrella THEN get wet ELSE stay dry END IF
   • IF isRaining = true AND hasUmbrella = false THEN OUTPUT “get wet” ELSE OUTPUT “stay dry” END IF { data-correct }
   • IF (raining) AND (not umbrella) { get wet } ELSE { stay dry }
   • IF weather = rain AND umbrella = no THEN wet = yes ELSE dry = yes END IF

10. Which of these is NOT a benefit of using pseudocode before writing actual code?

    • Focus on logic without syntax details
    • Easier to communicate with non-programmers
    • Automatically generates working code { data-correct }
    • Helps identify logic errors early

11. Complete this PlantUML activity diagram for a simple login system:

    🔍 View Larger

    _?yesnoOUTPUT “Login successful”OUTPUT “Invalid credentials”

    • username = “admin” AND password = “secret” { data-correct }
    • credentials valid
    • login correct
    • username AND password

12. What’s the difference between pseudocode and actual programming code?

    • Pseudocode uses natural language structure without specific syntax rules { data-correct }
    • Pseudocode can’t represent complex algorithms
    • Programming code is always longer than pseudocode
    • There is no difference