Lesson 018
Pseudocode
Planning Before Coding
1:00How to plan an algorithm in plain language before writing real code — using standard keywords, the three control structures, and a clear translation workflow.
By the end, you can
- Explain what pseudocode is and why programmers use it before writing real code.
- Identify the three control structures (sequence, selection, iteration) in a pseudocode snippet.
- Use standard keywords (SET, IF/THEN/ELSE/ENDIF, WHILE, FOR EACH, INPUT, OUTPUT, RETURN) correctly.
- Order the steps of an algorithm in pseudocode so the logic is correct (e.g., initialize before looping, loop before returning).
- Apply the conventions of uppercase keywords and indentation to write clear, readable pseudocode.
- Explain the string-concatenation pitfall when translating pseudocode INPUT into JavaScript.
- Describe the three limitations of pseudocode and explain why it does not replace testing.
- Distinguish pseudocode, flowcharts, and real code by purpose and executability.
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