5.1.1. Basic Steps in a Procedure Call

Try these first

1. 1.

   What are the three steps of a procedure call in programming?

   Hint

   Think of the acronym SCR.

2. 2.

   Why is the stack pointer important?

   Hint

   Consider how it helps to manage saved data.

3. 3.

   What is the order of steps in a procedure call?

   • Call
   • Save
   • Return
   • Save
   • Call
   • Return
   • Return
   • Call
   • Save

   Hint

   Remember the acronym SCR.

4. 4.

   True or False: The stack pointer points to the bottom of the stack.

   • True
   • False

   Hint

   Think about how the stack grows.

5. 5.

   Describe a scenario where failing to properly execute the return from a nested procedure leads to an error in a program.

   Hint

   Think about scenarios in applications that require multiple steps.

6. 6.

   Design a flowchart to illustrate the steps of saving context, calling a procedure, and returning, ensuring it includes what is saved at each point.

   Hint

   Visualize each action clearly and sequentially.