Data-Structures

A stack is used to pass parameters to procedures in a procedure call.
(a) If a procedure P has two parameters as described in procedure definition:

    procedure P (var x :integer; y: integer); 
    and if P is called by ; P(a,b) 

State precisely in a sentence what is pushed on stack for parameters a and b.

(b) In the generated code for the body of procedure P, how will the addressing of formal parameters x and y differ?