TicketCalc classifies cinema tickets by category according to a customer's age.
Here is the pseudo-code for an algorithm that determines the qualification category of a customer.
2 SET ageBoundaries TO [2, 12, 18, 65]
3 SET ticketType TO ["Infant", "Child", "Youth", "Adult", "Senior"]
4 SET found TO False
5 SET i TO 0
6
7 SEND "Enter age" TO DISPLAY
8 RECEIVE inAge FROM (INTEGER) KEYBOARD
9
10 WHILE (found = True) AND (i < LENGTH(ageBoundaries)) DO
11 IF (inAge > ageBoundaries[i]) THEN
12 SET i TO i + 1
13 ELSE
14 SET found TO True
15 END IF
16 END WHILE
17 SEND ticketType[i] TO DISPLAY
The pseudo-code produces an incorrect output.
When the user enters 15, the algorithm outputs "Infant". The correct output should be "Youth".
State the name for this type of error.
159 exam-style questions on Edexcel GCSE Computer Science Algorithms, covering Constructs for solving problems, Variables, constants and data structures, Arithmetic, relational and logical operators, Tracing algorithm output with trace tables, Types of error and correcting logic errors, Standard algorithms (sorts and searches), and Evaluating algorithm fitness and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.