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25Easy

State the most suitable data type for the following variables used in the algorithm described in Figure 1.

Figure 1

diveDepth ← USERINPUT
diveCount ← USERINPUT
salinityPPT ← 35.0
systemAlert ← "Normal operations"
errorLog ← "Invalid sensor reading"
IF diveDepth > 200.5 THEN
    IF diveCount >= 5 THEN
        salinityPPT ← 34.15
        OUTPUT salinityPPT
    ELSE
        OUTPUT systemAlert
    ENDIF
ELSE
    OUTPUT errorLog
ENDIF

Variable identifier	Data type
`salinityPPT`
`systemAlert`

[2]

Data types Questions

Practise AQA GCSE Computer Science Data types with exam-style questions for GCSE Computer Science. 50 questions, matched to the AQA GCSE Computer Science (8525) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.