Computer Science (AS & A Level) · Oct / Nov 2024 · Paper 22 · Question 3
9618
As printed in the paper
The question as text
A program uses a stack to hold up to 60 numeric values. The stack is implemented using two integer variables and a 1D array. The array is declared in pseudocode as shown: DECLARE ThisStack : ARRAY[1:60] OF REAL The stack operates as follows: • Global variable SP acts as a stack pointer that points to the next available stack location. The value of SP represents an array index. • Global variable OnStack represents the number of values currently on the stack. • The stack grows upwards from array element index 1.
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Show the answer and mark scheme
3(a)(i)[1]
3(a)(ii)[2]
3(b)[4]
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