Question 1

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;E) A) and B)
F) All of the above A

Question 2

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

Accepted Answer

cstdlib

Question 3

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

Accepted Answer

A)   i = 1;
B)   i 
C)   i++;
D)   cout << "Hello World"; E) A) and B)
F) C) and D)

Question 4

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 5

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 6

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 E) A) and B)
F) B) and C)

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

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 9

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

Accepted Answer

A)   the statement
B)   loop condition
C)   the expression
D)   update statementE) A) and C)
F) C) and D)

Question 10

Consider the following code. int limit; Int reps = 0; Cin >> limit; While (reps \quad Cin >> entry; \quad Triple = entry * 3; \quad Cout \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 E) B) and C)
F) B) and D)

Question 11

Putting one control structure statement inside another is called ____________________.

Accepted Answer

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

Question 12

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 loopE) A) and B)
F) A) and C)

Question 13

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

Accepted Answer

A) True 
 B)False

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

____ loops are called posttest loops.

Accepted Answer

A)   break
B)   for
C)   while
D)   do...whileE) C) and D)
F) None of the above

Question 16

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

Accepted Answer

A)   if
B)   switch
C)   while...do
D)   do...whileE) B) and C)
F) A) and B)

Question 17

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

Accepted Answer

A)   end
B)   unhinged
C)   infinite
D)   definiteE) B) and C)
F) A) and B)

Question 18

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)   sequenceE) A) and D)
F) None of the above

Question 19

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

Accepted Answer

A)   24 0
B)   24 1
C)   25 0
D)   25 1 E) B) and D)
F) B) and C)

Question 20

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 E) A) and C)
F) C) and D)

Exam 5: Control Structures II (Repetition)

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

Correct AnswerverifiedA

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

Correct Answerverifiedcstdlib

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;

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedFalse

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

Putting one control structure statement inside another is called ____________________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

____ loops are called posttest loops.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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;

Correct AnswerverifiedShow Answer

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;

Correct AnswerverifiedShow Answer

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A

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cstdlib

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;

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

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False

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

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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.

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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;

Correct Answer
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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;

Correct Answer
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