String handling operations in a programming language

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Question 18

Easy

A telemetry logging system receives string data from remote environmental sensors. Each data packet is formatted as:

[SensorID]-[Timestamp]-[Reading] (for example, "TEMP01-16982300-23.5")

To process this string, a program first identifies the index of the first hyphen delimiter using the statement:

hyphenPos ← POSITION(telemetry, '-')

Using the standard AQA pseudo-code definition of SUBSTRING(startPosition, length, string), which of the following statements correctly extracts the SensorID substring and assigns it to the variable sensorID?

$sensorID←SUBSTRING(1,hyphenPos,telemetry)\texttt{sensorID} \leftarrow \texttt{SUBSTRING}(1, \texttt{hyphenPos}, \texttt{telemetry})$

$sensorID←SUBSTRING(0,hyphenPos−1,telemetry)\texttt{sensorID} \leftarrow \texttt{SUBSTRING}(0, \texttt{hyphenPos} - 1, \texttt{telemetry})$

$sensorID←SUBSTRING(0,hyphenPos,telemetry)\texttt{sensorID} \leftarrow \texttt{SUBSTRING}(0, \texttt{hyphenPos}, \texttt{telemetry})$

$sensorID←SUBSTRING(hyphenPos,0,telemetry)\texttt{sensorID} \leftarrow \texttt{SUBSTRING}(\texttt{hyphenPos}, 0, \texttt{telemetry})$

String handling operations in a programming language

Question 18

String handling operations in a programming language Questions

String handling operations in a programming language

Question 18

String handling operations in a programming language Questions