Practice Returning Values From Procedures (5.2.3)

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6 sample questions

Question 1.
What does the Stack Pointer (SP) indicate?
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Think about where data is temporarily kept in memory.
Question 2.
Why do we save the Program Counter (PC) before calling a procedure?
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Consider how the CPU knows where to continue execution.
3Question 3.
What is the purpose of the Stack Pointer (SP)?
- To point to the current instruction
- To point to the top of the stack
- To store the main program address
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Consider its role in stack management.
4Question 4.
True or False: The Program Counter (PC) is pushed onto the stack during a procedure call.
- True
- False
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Reflect on what happens when procedures are invoked.
Question 5.
Describe how the stack changes during two nested procedure calls. Illustrate with diagrams.
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Sketch out the stack levels before and after each call.
Question 6.
Discuss the implications of a stack overflow error. How can you prevent it when creating recursive procedures?
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Reflect on how recursion needs to manage calls efficiently.

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