Cambridge IGCSE ยท 0478 ยท Paper 2 ยท Algorithms, programming & logic
Computer Science 0478/23 May/June 2019 past paper
Cambridge IGCSE Computer Science (0478) Paper 2 (Algorithms, programming & logic), variant 3, May/June 2019: the question paper and its official mark scheme, 6 questions worth 50 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 6
- Marks
- 50
- Grade A from
- 33
File names: 0478_s19_qp_23 ยท 0478_s19_ms_23
Grade thresholds for 0478/23 May/June 2019
The minimum raw marks Cambridge set for each grade on this component (out of 50). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|
| 33 | 25 | 18 | 14 | 11 | 8 | 5 |
Topics in this paper
Which syllabus chapters 0478/23 May/June 2019 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Scenario Question | 1 | 20 |
| Programming | 2 | 12 |
| Algorithm Design and Problem-Solving | 2 | 10 |
| Databases | 1 | 8 |
Questions in 0478/23 May/June 2019
- Question 1
(a) All variables, constants and other identifiers must have meaningful names. Describe the data structures you have used in Task 1 to record the items available that day. Include some sample data for each data structure you have described. (b) โฆ
- Question 2
(a) An algorithm has been written in pseudocode to input the weight of 500 items and reject any that are over-weight or under-weight, then print the percentage rejected. Count 1 Reject 0 Over 62 Under 58 REPEAT INPUT ItemWeight IF โฆ
- Question 3
This flowchart inputs the tread depth of five tyres, four on the car and a spare tyre. Any tread depth of 1.6 mm or less is rejected. To be potentially roadworthy, a car must have four tyres with a tread โฆ
- Question 4
For each of the four checks in the table, place a tick in the correct column to show whether it is an example of a validation or verification check. Statements Validation Verification Range check Double entry Check digit Presence check
- Question 5
Identify and describe three loop structures that are available in pseudocode. Loop structure 1 Description Loop structure 2 Description Loop structure 3 Description Question 6 begins on page 14.
- Question 6
A database table, TRAIN, is used to keep a record of train departures from a station. Train Number Platform Destination Departure Time Status 1A37 1 Newtown 08:00 On time 2X19 2 Anytown 08:10 Late 1A29 1 Bigcity 08:15 On time โฆ
Other Computer Science papers from May/June 2019
- 0478/11 Computer systems
- 0478/12 Computer systems
- 0478/13 Computer systems
- 0478/21 Algorithms, programming & logic
- 0478/22 Algorithms, programming & logic