q 4 b

(b) The following questions are based on the C++ code as shown in Figure Q4(b). struct chain char a; chaint n; }; chain* px, py; px = new chain; px a= 'B'; px n = NULL; py = new chain; py a= ''; py n-px; px = NULL: Figure Q4(b) (1) Specify how many dynamic variables are created after px = NULL is executed. [2 marks] (ii) Specify what is the content of px variable after px = new chain is executed. [2 marks] 111 Specify what is the content of px variable after px = NULL is executed [2 marks] (iv) Draw the relationship between TWO (2) variables px and py after all statements in Figure Q4(b) is executed. [2 marks]