Question

Question 27

The following statement ________.
cin >> *num3;

1. stores the keyboard input in the variable num3
2. stores the keyboard input into the pointer num3
3. is illegal in C++
4. stores the keyboard input into the variable pointed to by num3
5. None of these

Question 28

The following statement ________.
int *ptr = new int;

1. results in a compiler error
2. assigns an integer less than 32767 to the variable ptr
3. assigns an address to the variable ptr
4. creates a new pointer named int

None of these

Question 29

The ________ and ________ operators can be used to increment or decrement a pointer variable.

1. addition, subtraction
2. ++, --
3. modulus, division
4. All of these
5. None of these

Question 30

What will the following code output?
int number = 22;
int *var = &number;
cout << *var << endl;

1. the address of number
2. 22
3. an asterisk followed by 22

an asterisk followed by the address of number

Answer 1

27) D.  stores the keyboard input into the variable pointed to by num3
28) C.  assigns an address to the variable ptr
29) B.  ++, --
30) B.  22