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 - AQA - GCSE Computer Science - Question 1 - 2023 - Paper 1
Question 1
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.
What is the result of concatena... show full transcript
Worked Solution & Example Answer: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 - AQA - GCSE Computer Science - Question 1 - 2023 - Paper 1
Step 1
What is the value of x?
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Answer
In the statement x ⟵ LEN(state), the function LEN calculates the length of the string stored in the variable state. If state contains a value represented in Figure 1, examine that value to determine its length. For example, if state is 'California', then x would be assigned a value of 10.
Step 2
What is the result of concatenating the contents of the variables city and landmark?
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Answer
Concatenation combines the two strings. If city is 'San Francisco' and landmark is 'Alcatraz Island', the result would be 'San Francisco Alcatraz Island'. However, based on the options provided, we identify the correct format to select.
Step 3
What is the value of y?
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Answer
The statement y ⟵ SUBSTRING(4, 7, landmark) retrieves a substring from the variable landmark starting from position 4 for a length of 7. Therefore, if landmark is 'Alcatraz Island', y would contain 'catraz'.
Step 4
What value is assigned to z?
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Answer
The function z ⟵ POSITION(landmark, 't') finds the first occurrence of the character 't' in the string stored in landmark. Assuming landmark is 'Alcatraz Island', the first position of 't' is at index 4, so z would be assigned the value 4.
