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Exercises: Learning objectives [TOC]
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The primary objective remains to practice the workflow "Edit (and save) ->
Translate -> Execute (if no errors occurred during translation)."

The secondary objective is to raise awareness of the following concepts:

- Lifetime of local and global variables.
- Parameter passing according to the principle of Call-by-Value.
- Significance of the stack for function calls and local variables.

Additionally, as in previous exercises, new features of the ABC programming
language will be introduced through examples.