Brainlag PlusRead flowcharts with decisions and loops, work out their outputs, complete missing boxes and draw your own.
The symbols and the arrows
A flowchart shows an algorithm as boxes joined by arrows.
Follow the arrows from Start until you reach Stop.
- Rounded rectangle (terminal): Start or Stop.
- Parallelogram: an input or an output, such as "Input mark" or "Output total".
- Rectangle: a process, an action or a calculation, such as "t = t + n".
- Diamond: a decision, a question with a yes or no answer. It has two arrows out, labelled Yes and No.
- Rectangle with double sides: a subroutine, another part of the program that runs and then comes back.
The rest of this lesson and its 8 practice questions are in Plus.
Screen 1 of 5, free to read.
- 8 exam-style questions, marked as you go, each with a worked solution
- Anything you get wrong is saved to your flashcards