Quiz 9: Pointer

Quiz
•
Computers
•
University
•
Medium
Xin Yang
Used 51+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The expression:
int *p = new int[20];
allocates 20 integers and assigns the base address to p
allocates 20 integers off the stack local to a block
reads in 20 integer values from cin
allocates an integer of size 20 bytes
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which form of the operator delete would you use to deallocate free store memory allocated by this statement:
Students *student_list = new Students[size];
delete [] student_list
delete student_list
delete [] students
delete students[size]
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following correctly displays the memory address of the variable named menu?
int menu = 23;
cout << *menu;
cout << menu;
cout << &menu;
cout << &menu*;
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the variable i contain after the following code executes?
int i = 17;
int *p = &i;
*p = 98;
98
17
81
0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Allocation of memory storage for statically allocated variables occurs during ________
while memory allocation for dynamically allocated variables occurs during ___________.
(load time) and (compile time)
(load time) and (run time)
(run time) and (compile time)
(compile time) and (load time)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Given:
int *p1;
int *p2;
p1 = new int;
p2 = p1;
delete p1;
p1 = NULL;
Which of the following best describe the current situation with p2?
p2 is pointing at where p1 is pointing at.
p2 is not pointing at any memory location.
p2 is a dangling pointer.
p2 is also assigned value NULL.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose the following structure and variables are declared:
struct Student {
string name;
string email;
};
Student john;
Student* p = &john;
Which of the following statements print the student john's email?
cout << p.email;
cout << p[email];
cout << john->email;
cout << p->email;
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