Subtopic Notes
A - Introduction
Preq. Programming Basics
Note: Chapters 19 and 20 have prerequisites from AS or IGCSE, requiring prior understanding of programming. Hence, programming-related notes are included here.
Programming is the process of writing instructions in a language a computer can understand to solve problems or perform tasks. It is a transferable skill, meaning the skills developed for one scenario can be easily transferred to another.
Algorithm
Solution to a problem expressed as a sequence of defined steps
Stages of Computer Program
- Input: Takes in values from the user to the program
- Storage: Temporarily or permanently saves data for use during or after program execution
- Process: Operations that transform inputs into outputs
- Output: Displays values to the user
Output
PYTHON
Python can be executed directly in the browser.
No output yet.
PSEUDOCODE
Pseudocode uses basic Cambridge-style keyword highlighting. Execution is not supported yet.
Comments
You may wish to write something in the code which the computer will ignore which is why comments are needed. Text written in a program but not run by the computer is called a comment. These are basically used to explain why a part of code is used, help other people reading the code understand it faster, or Ignore a line of code.
PYTHON
Python can be executed directly in the browser.
No output yet.
PSEUDOCODE
Pseudocode uses basic Cambridge-style keyword highlighting. Execution is not supported yet.