Question

C program.

Given the following code:

int add_and_double(int a, int b)
{
int result = (a + b) * 2;

return result;
}


int main()
{
  int val;

val = add_and_double(12, 40);

return 0;
}

where the function main() (i.e. the caller) calls the function add_and_double() (i.e. the callee).

Which of the following actions are taken when main() calls the function add_and_double()?  Select all that apply.

	a.	Once the callee returns, the caller frees the stack memory for the callee's function parameters a and b.
	b.	The callee allocates space on the stack for its local variable result.
	c.	Before returning, the callee frees the stack memory used by its function parameters a and b.
	d.	The callee allocates space on the stack for the parameters a and b; and populates a with the value 12 and b with the value 40.
	e.	Once the callee returns, the caller frees the stack memory for the callee's local variable result.
	f.	The caller allocates space on the stack for the callee's local variable result.
	g.	The caller allocates space on the stack for the parameters a and b; and populates a with the value 12 and b with the value 40.
	h.	Before returning, the callee frees the stack memory used by its local variable result.

Answer 1

The correct options are :

A). Once the callee returns, the caller frees the stack memory for the callee's function parameters a and b.

B). The callee allocates space on the stack for its local variable result.

G). The caller allocates space on the stack for the parameters a and b; and populates a with the value 12 and b with the value 40.

H). Before returning, the callee frees the stack memory used by its local variable result.

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