Videos
Cambridge Pseudocode
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14 video lessons
1:59
Lesson 1
OUTPUT and sequence
Cambridge exams write algorithms in pseudocode — not Python, not Java. It is a real notation with real keywords, and the paper expects those exact words. Here…
1:48
Lesson 2
Variables and DECLARE
A variable is a named store that holds one value. The arrow is how a value gets in — read it as "store sixteen into Age", and watch it happen: the sixteen goes…
1:42
Lesson 3
INPUT and data types
INPUT reads one line that the user types and stores it in the variable you name. That is the whole statement — no prompt, no brackets. Pair it with an OUTPUT…
2:05
Lesson 4
Arithmetic, DIV and MOD
Plus, minus, times and slash behave exactly as you would expect, and there is nothing to memorise about the first three. The fourth is worth a second look.…
2:04
Lesson 5
Selection: IF
Selection is the second control structure, and it is one test with exactly two exits. If the test is true, the program takes the TRUE exit and runs the block…
1:59
Lesson 6
Selection: CASE
When one variable is checked against several fixed values, a stack of IFs gets long. CASE says the same thing in one block. Grade holds two. CASE compares it…
2:08
Lesson 7
Iteration: FOR
Iteration is the third control structure, and a FOR loop is the version you use when you already know how many times. It has exactly one moving part: the…
2:11
Lesson 8
Iteration: WHILE and REPEAT
When you do not know how many repeats you need, the test moves into the loop itself. In a WHILE loop the test is at the top: it is checked before you are let…
2:07
Lesson 9
String handling
Three of the string functions have nothing to trip on. LENGTH gives how many characters are in a string — hello is five. UCASE returns it in capitals, and…
1:59
Lesson 10
1-D arrays
An array stores many values under one name, and the declaration says exactly three things. Score is one name for all of them. The two numbers in brackets are…
2:08
Lesson 11
2-D arrays
A 2-D array is a grid — a table with rows and columns. The declaration has two index pairs instead of one, and each pair does the same job it did in lesson…
2:02
Lesson 12
Procedures
A procedure is a named block of steps. You write it once, between PROCEDURE and ENDPROCEDURE, and then run it with CALL — as many times as you like. And notice…
2:02
Lesson 13
Functions
A function works something out and hands the answer back. Two words do that, and they are easy to mix up because they differ by one letter. RETURNS, with an S…
2:03
Lesson 14
Putting it together
Cambridge names four standard methods — totalling, counting, linear search, and finding the maximum or minimum — and it is tempting to learn them as four…