Question 4 (a) Provide a single line of C++ code that will declare a variable that is a pointer to a char value. The variable is named y. [2 marks] (b) Assume a variable named initial is declared with: char initial-'C' ;. Set the variable y, to point to initial. [2 marks] (c) You are given the following code: void addOne (int n) f int mainO int n-22; addOne (n); cout