Computer Science (AS & A Level) · Oct / Nov 2024 · Paper 21 · Question 4
9618
As printed in the paper
The question as text
A program includes the following assignment statement: Result ← STR_TO_NUM(x) / STR_TO_NUM(y) When the program evaluates the expression in the statement, it performs a calculation. Variable Result is of type real and variables x and y are of type string. Two checks are required before the calculation is performed: 1. The two strings represent valid numeric values. 2. The numeric value of string y is not zero.
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4(a)[2]
4(b)[2]
4(c)[6]
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