5. MC] When you create a variable r using statemernt int x; (a) r has an initial value of 0. (b) r has no initial value, and using r before you initialize r will lead to a run-time error (c) r has no initial value, and using r before you initialize r will lead (d) will have an initial value, but you have no way of knowing what 6. MC Suppose that variable w has value 7. What is the value of C++ to a compile error that value will be when the program runs, expressionw9 > 3)? (a) true (b) false (d) It does not have a value, but it changesto hold 9. (e) It is not allowed in C++ 7. MC] Function f(n) is defined below in C++. What is the value of C++ expression f(f(3)? (a) 3 int f (const int n) 6 (c) 12 (d) 21 (e) 42 int m (n+1) n; return m/2; 8, [MC] What is the value of C++ expression (7 % 3 + 1)? (a) 1 (c) 2.33333. (d) 3 (e) 3.33333