IGCSE CS Pseudocode

Every lesson runs in your browser — write real code, press Run, and the tasks check themselves. Free, no account needed, with notes in English and Chinese.

Start the course

Lessons in this course

1. 01 OUTPUT and sequence
2. 02 Variables and DECLARE
3. 03 INPUT and data types
4. 04 Arithmetic, DIV and MOD
5. 05 Selection: IF
6. 06 Selection: CASE
7. 07 Iteration: FOR
8. 08 Iteration: WHILE and REPEAT
9. 09 String handling
10. 10 1-D arrays
11. 11 2-D arrays
12. 12 Procedures
13. 13 Functions
14. 14 Putting it together
15. 15 Text files

Language reference

/know/reference/pseudocode