IF ... THEN ... ELSE ... ENDIF and CASE ... OF ... OTHERWISE ... ENDCASE are two different conditional statements that you can use when writing pseudocode. Explain, using examples, why you would choose to use each conditional statement. Example 1 Reason for choice Example 2 Reason for choice

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.

1. [6] For each example: 1 mark for correct structure, 1 mark for appropriate content, 1 mark for the reason. There are many correct answers these are only examples
2. IF X > 0 AND X <= 10 THEN PRINT 'In Range' ELSE PRINT 'Out of Range' ENDIF
3. - e.g. checking a condition that may be complex//uses relational operators// checking for a range of values// only 2 options
4. CASE X OF 1 : PRINT 'Option 1' 2 : PRINT 'Option 2' 3 : PRINT 'Option 3' OTHERWISE PRINT 'Incorrect choice' ENDCASE
5. - e.g. checking for discrete/large number/more than 2 of values