Question

When a function is recursively called, all automatic variables :

• A. are initialized during each execution of the function
• B. are retained from the last execution
• C. are maintained in a stack
• D. are ignored

Answer 1

When a function is recursively called, all automatic variables are initialized during each execution of the function.

Comments

See dear i meant here when call starts all the automatic variable which are initialized in stack and de-allocated when the call ends or you can say A new copy, with its value initially undefined, is made for each new call. .They are not maintained after the call ends.

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I agree with your statement ,but I don't understand the meaning of automatic variables .are they special kind of variables ?

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Variable are named differently as a point of occurrence in the program.So automatic variable is used here because of they are occurring inside function .

For more info you can check here Variable

Answer 2

All the local variables that are bounf to executes in its activation records will need freash allocation each and every time.

So local variables inside the each activation records needs freash allocation.

Comments

If variable is static it retained it's updated value in different function calls.