Exercise #6 Given the following Class: class A { int* p; A(int n = 1) { p = new int[n]; } ~A() { delete[] p; } }; What is the default access modifier of p ? a. public . b. protected . c. private . d. int *. Exercise #7 Given the following function: int f() { int i = 5; int& r = i; r += r * 3; int* p = &r; *p += r; return i; } What is it expected to return ? a. 40 b. 20 c. 5 d. 25 Exercise #8 Given the following program: class A { } class B : public A { public: int x; protected: int y; private: int z; } class C : public B { } Which of the following sentences is true ? a. x and y members are accessible from within classes A and B. b. x and y members are accessible from within classes A and C. c. x, y, and z members are accessible from within classes B and C . d. x and y members are accessible from within classes B and C. Exercise #9 Given the following program: void printTime(int hours, int minutes = 0, int seconds = 30) { cout << "Time:" << hours << minutes << seconds << endl; } int main() { printTime(); return 0; } What is the expected result of the execution ? a. Printed result of Time : 0:0:30 . b. Printed result of Time : 00:00:30 c. Printed result of Time : 0:0:00 . d. Compilation error since too few arguments are given at the function call