GCSE AQA Computer Science OCR Exam Reference Language: Figure 1 shows an algorithm, rep

Question

Figure 1 shows an algorithm, represented using pseudo-code, which assigns a different value to four variables.

Figure 1

country ← 'United States of America'
state ← 'California'
city ← 'San Francisco'
landmark ← 'Alcatraz Island'

0 1.1 Define the term algorithm.

0 1.2 The variable x is assigned a value using the statement:

x ← LEN(state)

Using Figure 1, what is the value of x?
Shade one lozenge.

0 1.3 What is the result of concatenating the contents of the variables city and landmark in Figure 1?
Shade one lozenge.

0 1.4 The subroutine SUBSTRING extracts characters from a given string.
For example, SUBSTRING(3, 5, 'Computing') would return put.
The variable y is assigned a value using the statement:

y ← SUBSTRING(4, 7, landmark)

Using Figure 1, what is the value of y?
Shade one lozenge.

0 1.5 The subroutine POSITION finds the first position of a character in a string.
For example, POSITION('Computing', 'p') would return 3.
The variable z is assigned a value using the statement:

z ← POSITION(landmark, 't')

Using Figure 1, what value is assigned to z?
Shade one lozenge.

Figure 1 shows an algorithm, represented using pseudo-code, which assigns a different value to four variables - AQA - GCSE Computer Science - Question 1 - 2023 - Paper 1

Worked Solution & Example Answer:Figure 1 shows an algorithm, represented using pseudo-code, which assigns a different value to four variables - AQA - GCSE Computer Science - Question 1 - 2023 - Paper 1

Define the term algorithm.

Using Figure 1, what is the value of x?

What is the result of concatenating the contents of the variables city and landmark in Figure 1?

Using Figure 1, what is the value of y?

Using Figure 1, what value is assigned to z?

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