CIE IGCSE Computer Science Paper 2

Which of these is not a code data type

• integer

• boolean

• text

• character

Which of these is not a database data type

• character

• number

• yes/no

• currency

• text

Which line of pseudocode has a logical error when inputting 50 numbers and totalling/outputting the sum of those numbers that were under 100.

• total <- 0

• FOR count <- 1 TO 50

• IF num <= 100

• total <- total + num

• OUTPUT "The total of matching numbers was:", total

What would the fifth entry in the total column be in a trace table on a dry-run of the pseudocode shown below if the inputted numbers started with 64, 36, 103, 24, 102, 107, 15, 23, 84, …

• 124

• 226

• 231

• 139

• 15

Which of these statement type match ups is incorrect?

• Iteration: FOR count <- 1 TO 100 …. NEXT COUNT

• Totalling: x <- x + 1

• Assignment: name <- "Fred"

• Output: PRINT total

• Selection: CASE OF x …. OTHERWISE… ENDCASE

Which of these programming definitions is least complete/sufficient?

• Variable: A simple data-structure that consists of a named memory whose value can change during the runtime of the program.

• Constant: A simple data structure that consists of a named memory whose value cannot change during the runtime of the program

• Array: A compound data-structure to store a group of variables together as a single item

• Counting: The process of adding one repeatedly to a variable to count the number of occurrences of an event

• Sequencing: The principle that each executed line of code leads to the next line of code in an ordered and sequential fashion unless control flow such as looping/branching or procedure calls occur.

Tabitha wants to find the largest number in an array of 30 integers called Nums. On what line has she made a mistake?

• Line 1

• Line 2

• Line 3

• Line 4

• Line 8

Which two validation checks would be most suitable to check someone's AGE

• Length check

• Check digit

• type check

• range check

One statement being executed straight after another (unless looping, branching or procedure call) is the principle of

• sequencing

• iteration

• selection

• totalling

What is happening to the 'positives' variable here?

• totalling

• iteration

• counting

• sequencing

• selection