Homework Answers
i) Activation Record:
ii) name of the procedure calls from B
B calls C
static chain is a chain of static links that connects certain activation record instances.
The static chain from an activation record instance connects it to all of its static ancestors.
B is called from ( B -> E -> D -> A -> Main ).
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This is for a Unix class.
Please help me out.
I am attaching a skeletal code of the program below, it just
needs ti be filled in.
Below is a skeletal code of the program. Fork a child process and then use the
parent for reading and the child for writing. This is
just a way of sending and receiving messages
asynchronously.
/*
*************************************************************
* Utility functions
* **************************************************************
*/
static void
usageError(const char * progName, const char *msg)
{...
3. Show the stack with all activation record instances, including static and dynamic chains, when execution reaches position 1 in the following skeletal program. Assume Bigsub is at level 1 procedure Bigsub is procedure A (Flag procedure Bis Boolean) is A (false) end; -of B begin -- of A if flag then B; else C; end; -of A procedureCis procedure D is end; -of D end; -- of dC begin of Bigsub A(true); of Bigsub end; -- The calling sequence...
(17) (1 mark) What is the static parent of a subprogram? (18) (1 mark) What is a formal parameter? (19) (3 marks) Consider the following program, written in a C-like lan- guage int x void f(int a) {а- а+2; х %3D х+1;} void main x 1 f(x); printf("x= d\n",x); What value ot xwill be printed by the main program under each of the tollowing conditions? Imagine that tformal parameter a of function fis being passed: i by value ii. by...
Given the following Ada program: procedure Main is X, Y: Integer; procedure Sub1 is Y, Z: Integer; begin -- of Sub1 point 1 Sub2; end; -- of Sub1 procedure Sub2 is X: Integer; procedure sub3 (B: Integer) is W: Integer; begin -- of Sub3 point 2 end; -- of Sub3 begin -- of Sub2 point 3 Sub3 (X); end; -- of Sub2 begin -- of Main point 4 Sub1; end; -- of Main For each of the four marked points,...
Show the stack with all activation record instances, including static and dynamic chains, when execution reaches position 1 in the following ske- letal program. Assume Bigsub is at level 1. procedure Bigsub is MySum : Float; procedure A is X : Integer; procedure B(Sum : Float) is Y, Z : Float begin -of B C(Z) end; -- of B begin -of A B (X)i end -- of A procedure C (Plums Float) is begin - of c end; -- of...
Some java questions:
18. Consider the following class definitions public class TestAB public static void main (String args) A bl new B() в ь2 -new B() ; b1.х, А.у, Ь2.х, в.у); System.out.printf ("%d, Sd, %d, d\n", class A public int x = 2; public static int y = 4; public A () ( X=y- class Bextends A public int x = 32; public static int y = 45; public B ( x ++y What is the result of attempting to...
This is for a Unix class.
Please help me out.
I am attaching a skeletal code of the program below, it just
needs ti be filled in.
Below is a skeletal code of the program. Fork a child process and then use the
parent for reading and the child for writing. This is
just a way of sending and receiving messages
asynchronously.
/*
*************************************************************
* Utility functions
* **************************************************************
*/
static void
usageError(const char * progName, const char *msg)
{...
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