The questions of Test_1

with two model answers - one correct (yes) and one incorrect (no)

Mark the correct/incorrect assertions about pointers.
(yes) A pointer denotes the location of a value in memory.
(no) Pointer arithmetic means to add an address to an array pointer.

Mark the correct/incorrect definitions.
(yes) int* p = new int;
(no) int pp = new int;

We have the following variable definitions:

int* pt1;
int p = 2;
int* pt2 = new int;

We have the following variable definitions:

int a[3] = {10, 20, 30};
int* pa = a;

Mark the correct/incorrect definitions about character pointers and arrays.
(yes) char hello[] = "Hello";
(no) char one[1] = "1";

We have the following classes:

class Point { ... };
class Circle :public Point { ... };

We have the following classes definitions:

class A {
 public:
 void af();
... };
 class B : public A { 
public:
 void bf();
 ... };

Suppose the class D inherits from B. Let b be an object of the class B, d be an object of the class D, pb be a pointer of the class B and pd be a pointer of the class D. Which of the following assignments are legal?
(yes) b = d;
(no) d = b;

Mark the correct/incorrect assertions about virtual functions and polymorphism.
(yes) Only member functions can be dynamically bound.
(no) Only nonmember functions can be statically bound.

Mark the correct/incorrect assertions about inheritance hierarchy of stream classes.
(yes) The fstream class derives from iostream.
(no) The fstream class derives from ofstream.

Mark the correct/incorrect assertions about stream classes, objects and member functions.
(yes) An object of istream class is a source of bytes.
(no) The object cin belongs to a class that is derived from ifstream.

We have the following file variables:

ifstream fin;
ofstream fout;
fstream f;

int k = 10;
double x = 15.5;
char ch = 'N';
string s = "alabala";