Unit 1 · Lesson 1
Build the idea
Start with the concept and its key vocabulary.
Programs use output to communicate. In both OCR Exam Reference Language (ERL) and Python, print() displays a message. Put text inside quotation marks so the computer treats it as a string. Python can separate multiple printed values with commas; concatenation uses + to build one string instead.
Data or information a program displays to the user.
A sequence of characters, such as a word or sentence.
The rules that say how code must be written.