O-LevelComputer ScienceProgramming2210/21 · May/June 2025 · Q98 Marks
The variables A and B are used in a program. A holds a whole number and B holds text.
- (a)Write pseudocode statements to declare the variables A and B[2]
- (b)The function Odds (X) returns 'Odd' if the value of x is an odd number and returns 'Even' if the value of x is an even number. Write pseudocode statements to: • define the function • call the function using parameter A and store the return item in variable B Function definition Function call[6]
Mark scheme
Marking points from the official mark scheme (May/June 2025). The mark or mark type is shown in brackets.
- [1] (a) DECLARE A: INTEGER
- [1] (a) DECLARE B: STRING
- [1] (b) One mark for using FUNCTION and ENDFUNCTION and RETURNS STRING
- [1] (b) One mark for naming the function Odds.
- [1] (b) One mark for defining the parameter correctly.
- [1] (b) One mark for determining if odd/even using MOD/DIV/ROUND using parameter.
- [1] (b) One mark for correctly returning 'Odd' and 'Even'.
- [1] (b) One mark for correct function call
- Example (b): FUNCTION Odds(X: INTEGER) RETURNS STRING IF MOD(X, 2) = 0 THEN RETURN "Even" ELSE RETURN "Odd" ENDIF ENDFUNCTION B ← Odds (A)
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