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WAEC Computer Studies questions: Algorithms and flowcharts

21 questions with answers and explanations. Tap an option to check yourself.

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All topicsAlgorithms and flowcharts · 21Application packages · 25Computer hardware and the CPU · 21Computer networks and the internet · 23Computer security, ethics and safety · 22Data processing and information · 22Evolution of computing · 23Input and output devices · 22Logic gates and Boolean algebra · 21Memory and storage devices · 23Number systems and data representation · 24Programming languages and BASIC · 22Software and operating systems · 22

  1. Question 1· Algorithms and flowcharts· WAEC

    Which of these is written in pseudocode style?

    Explanation and discussion

  2. Question 2· Algorithms and flowcharts· WAEC

    A set of step-by-step instructions for solving a problem is

    Explanation and discussion

  3. Question 3· Algorithms and flowcharts· WAEC

    An algorithm is

    Explanation and discussion

  4. Question 4· Algorithms and flowcharts· WAEC

    An algorithm sets S = 0, then adds 2, 4 and 6 to S. The final value of S is

    Explanation and discussion

  5. Question 5· Algorithms and flowcharts· WAEC

    A loop in a program is used to

    Explanation and discussion

  6. Question 6· Algorithms and flowcharts· WAEC

    In a flowchart, a diamond shape represents

    Explanation and discussion

  7. Question 7· Algorithms and flowcharts· WAEC

    A loop in an algorithm is used to

    Explanation and discussion

  8. Question 8· Algorithms and flowcharts· WAEC

    In a flowchart, the diamond symbol represents a

    Explanation and discussion

  9. Question 9· Algorithms and flowcharts· WAEC

    If A = 5 and B = 3, the statement "IF A > B THEN PRINT A ELSE PRINT B" prints

    Explanation and discussion

  10. Question 10· Algorithms and flowcharts· WAEC

    Testing an algorithm by working through it by hand with sample values is a

    Explanation and discussion

  11. Question 11· Algorithms and flowcharts· WAEC

    Dry-running an algorithm with sample values helps the programmer to

    Explanation and discussion

  12. Question 12· Algorithms and flowcharts· WAEC

    A parallelogram in a flowchart represents

    Explanation and discussion

  13. Question 13· Algorithms and flowcharts· WAEC

    An algorithm sets X = 2 and then repeats 'X = X × 3' three times. What is the final value of X?

    Explanation and discussion

  14. Question 14· Algorithms and flowcharts· WAEC

    In a flowchart, a decision is shown by a

    Explanation and discussion

  15. Question 15· Algorithms and flowcharts· WAEC

    The oval symbol in a flowchart indicates

    Explanation and discussion

  16. Question 16· Algorithms and flowcharts· WAEC

    Pseudocode is

    Explanation and discussion

  17. Question 17· Algorithms and flowcharts· WAEC

    The oval (terminal) symbol in a flowchart shows

    Explanation and discussion

  18. Question 18· Algorithms and flowcharts· WAEC

    Input and output in a flowchart are shown by a

    Explanation and discussion

  19. Question 19· Algorithms and flowcharts· WAEC

    A loop that repeats a fixed number of times, such as "FOR I = 1 TO 10", runs its body

    Explanation and discussion

  20. Question 20· Algorithms and flowcharts· WAEC

    In a flowchart, an oval (terminal) symbol shows

    Explanation and discussion

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