Computer-Organization

Consider the following program in pseudo-pascal syntax. What is printed by the program if parameter a in procedure test 1 is passed as
(i) call-by-reference parameter
(ii) call-by-value-result parameter

     program Example (input, output)
     var b: integer;
     procedure test2:
     begin b:=10; end
    procedure test1 (a:integer):
     begin 	a:=5;
                writeln ('point 1: ', a, b);
                test2;
                writeln ('point 2: ', a, b);
     end
     begin(*Example*)
     b:=3; test1(b);
     writeln('point3:', b);
     end