Question 1

To generate a random number,you can use the function rand of the header file ____________________.

Accepted Answer

cstdlib

Question 2

Which of the following statements generates a random number between 0 and 50?

Accepted Answer

A)  srand(time(0));
Num = rand() % 50; 
B)  srand(time(10));
Num = rand()/50; 
C)  srand(time(0));
Num = rand()50; 
D)  srand(time(10));
Num = rand() % 50; 
A)  srand(time(0));
Num = rand() % 50; 
B)  srand(time(10));
Num = rand()/50; 
C)  srand(time(0));
Num = rand()50; 
D)  srand(time(10));
Num = rand() % 50; A

Question 3

Assume that all variables are properly declared.The following for loop executes 20 times.
for (i = 0; i <= 20; i++)
$\quad$cout << i;

Accepted Answer

A) True 
 B)False  False

Question 4

____ loops are called posttest loops.

Accepted Answer

A)  break 
B)  for 
C)  while 
D)  do...while 
A)  break 
B)  for 
C)  while 
D)  do...while

Question 5

What is the output of the following C++ code? num = 10;
while (num > 10)
$\quad$num = num - 2;
cout << num << endl;

Accepted Answer

A)  0 
B)  6 
C)  8 
D)  10 
A)  0 
B)  6 
C)  8 
D)  10

Question 6

Consider the following code. int limit; Int reps = 0; Cin >> limit; While (reps > entry; $\quad$Triple = entry * 3; $\quad$Cout << triple; $\quad$Reps++; } Cout << endl; This code is an example of a(n)____ while loop.

Accepted Answer

A)  flag-controlled 
B)  counter-controlled 
C)  EOF-controlled 
D)  sentinel-controlled 
A)  flag-controlled 
B)  counter-controlled 
C)  EOF-controlled 
D)  sentinel-controlled

Question 7

The control statements in the for loop include the initial statement,loop condition,and update statement.

Accepted Answer

A) True 
 B)False

Question 8

What is the initial statement in the following for loop? (Assume that all variables are properly declared.) int i;
For (i = 1; i < 20; i++)
$\quad$Cout << "Hello World";
$\quad$Cout << "!" << endl;

Accepted Answer

A)  i = 1; 
B)  i < 20; 
C)  i++; 
D)  cout << "Hello World"; 
A)  i = 1; 
B)  i < 20; 
C)  i++; 
D)  cout << "Hello World";

Question 9

Putting one control structure statement inside another is called ____________________.

Accepted Answer

The answer of Putting one control structure statement inside another...

Question 10

In ____ structures,the computer repeats particular statements a certain number of times depending on some condition(s).

Accepted Answer

A)  looping 
B)  branching 
C)  selection 
D)  sequence 
A)  looping 
B)  branching 
C)  selection 
D)  sequence

Question 11

In a while and for loop,the loop condition is evaluated before executing the body of the loop.Therefore,while and for loops are called ____________________ loops.

Accepted Answer

The answer of In a while and for loop,the loop...

Question 12

A loop that continues to execute endlessly is called a(n)____ loop.

Accepted Answer

A)  end 
B)  unhinged 
C)  infinite 
D)  definite 
A)  end 
B)  unhinged 
C)  infinite 
D)  definite

Question 13

What executes immediately after a continue statement in a while and do-while loop?

Accepted Answer

A)  loop-continue test 
B)  update statement 
C)  loop condition 
D)  the body of the loop 
A)  loop-continue test 
B)  update statement 
C)  loop condition 
D)  the body of the loop

Question 14

A semicolon at the end of the for statement (just before the body of the loop)is a(n)____________________ error.

Accepted Answer

The answer of A semicolon at the end of the...

Question 15

A do...while loop is a(n)____________________ loop,since the loop condition is evaluated after executing the body of the loop.

Accepted Answer

The answer of A do...while loop is a(n)____________________ loop,since the...

Question 16

The for loop body executes indefinitely if the loop condition is always ____________________.

Accepted Answer

A) True 
 B)False

Question 17

Suppose sum and num are int variables,and the input is 18 25 61 6 -1.What is the output of the following code? sum = 0; Cin >> num; While (num != -1) { $\quad$Sum = sum + num; $\quad$Cin >> num; } Cout << sum << endl;

Accepted Answer

A)  92 
B)  109 
C)  110 
D)  119 
A)  92 
B)  109 
C)  110 
D)  119

Question 18

Which of the following is a repetition structure in C++?

Accepted Answer

A)  if 
B)  switch 
C)  while...do 
D)  do...while 
A)  if 
B)  switch 
C)  while...do 
D)  do...while

Question 19

What is the output of the following C++ code? count = 1;
num = 25;
while (count < 25)
{
$\quad$num = num - 1;
$\quad$count++;
}
cout << count << " " << num << endl;

Accepted Answer

A)  24 0 
B)  24 1 
C)  25 0 
D)  25 1 
A)  24 0 
B)  24 1 
C)  25 0 
D)  25 1

Question 20

Which executes first in a do...while loop?

Accepted Answer

A)  the statement 
B)  loop condition 
C)  the expression 
D)  update statement 
A)  the statement 
B)  loop condition 
C)  the expression 
D)  update statement

Exam 5: Control Structures II (Repetition)

To generate a random number,you can use the function rand of the header file ____________________.

Which of the following statements generates a random number between 0 and 50?

Assume that all variables are properly declared.The following for loop executes 20 times. for (i = 0; i <= 20; i++) \quad cout << i;

____ loops are called posttest loops.

What is the output of the following C++ code? num = 10; while (num > 10) \quad num = num - 2; cout << num << endl;

Consider the following code. int limit; Int reps = 0; Cin >> limit; While (reps < limit) { \quad Cin >> entry; \quad Triple = entry * 3; \quad Cout << triple; \quad Reps++; } Cout << endl; This code is an example of a(n)____ while loop.

The control statements in the for loop include the initial statement,loop condition,and update statement.

What is the initial statement in the following for loop? (Assume that all variables are properly declared.) int i; For (i = 1; i < 20; i++) \quad Cout << "Hello World"; \quad Cout << "!" << endl;

Putting one control structure statement inside another is called ____________________.

In ____ structures,the computer repeats particular statements a certain number of times depending on some condition(s).

In a while and for loop,the loop condition is evaluated before executing the body of the loop.Therefore,while and for loops are called ____________________ loops.

A loop that continues to execute endlessly is called a(n)____ loop.

What executes immediately after a continue statement in a while and do-while loop?

A semicolon at the end of the for statement (just before the body of the loop)is a(n)____________________ error.

A do...while loop is a(n)____________________ loop,since the loop condition is evaluated after executing the body of the loop.

The for loop body executes indefinitely if the loop condition is always ____________________.

Suppose sum and num are int variables,and the input is 18 25 61 6 -1.What is the output of the following code? sum = 0; Cin >> num; While (num != -1) { \quad Sum = sum + num; \quad Cin >> num; } Cout << sum << endl;

Which of the following is a repetition structure in C++?

What is the output of the following C++ code? count = 1; num = 25; while (count < 25) { \quad num = num - 1; \quad count++; } cout << count << " " << num << endl;

Which executes first in a do...while loop?

An Overview of Computers and Programming Languages

Basic Elements of C++

Input/Output

Control Structures I (Selection)

User-Defined Functions

User-Defined Simple Data Types, Namespaces, and the string Type

Arrays and Strings

Records (structs)

Classes and Data Abstraction

Inheritance and Composition

Pointers, Classes, Virtual Functions, Abstract Classes, and Lists

Overloading and Templates

Exception Handling

Recursion

Linked Lists

Stacks and Queues

Searching and Sorting Algorithms

Binary Trees

Graphs

Standard Template Library (STL)

Filters

Assume that all variables are properly declared.The following for loop executes 20 times. for (i = 0; i <= 20; i++) $\quad$ cout << i;

What is the output of the following C++ code? num = 10; while (num > 10) $\quad$ num = num - 2; cout << num << endl;

Consider the following code. int limit; Int reps = 0; Cin >> limit; While (reps < limit) { $\quad$ Cin >> entry; $\quad$ Triple = entry * 3; $\quad$ Cout << triple; $\quad$ Reps++; } Cout << endl; This code is an example of a(n)____ while loop.

What is the initial statement in the following for loop? (Assume that all variables are properly declared.) int i; For (i = 1; i < 20; i++) $\quad$ Cout << "Hello World"; $\quad$ Cout << "!" << endl;

Suppose sum and num are int variables,and the input is 18 25 61 6 -1.What is the output of the following code? sum = 0; Cin >> num; While (num != -1) { $\quad$ Sum = sum + num; $\quad$ Cin >> num; } Cout << sum << endl;

What is the output of the following C++ code? count = 1; num = 25; while (count < 25) { $\quad$ num = num - 1; $\quad$ count++; } cout << count << " " << num << endl;