Question 1

Arrays can be passed as parameters to a function by value, but it is faster to pass them by reference.

Accepted Answer

A) True 
 B)False

Question 2

Given the following declaration: int j;
Int sum;
Double sale[10][7];
Which of the following correctly finds the sum of the elements of the fourth column of sale?

Accepted Answer

A)   sum = 0;For(j = 0; j Sum = sum + sale[j][3];
B)   sum = 0;For(j = 0; j Sum = sum + sale[j][4];
C)   sum = 0;For(j = 0; j Sum = sum + sale[j][4];
D)   sum = 0;For(j = 0; j Sum = sum + sale[j][3];E) A) and C)
F) A) and D)

Question 3

Which of the following correctly declares name to be a character array and stores "William" in it?

Accepted Answer

A)   char name[6] = "William";
B)   char name[7] = "William";
C)   char name[8] = "William";
D)   char name[8] = 'William';E) A) and B)
F) A) and C)

Question 4

Which of the following correctly declares and initializes alpha to be an array of four rows and three columns with the component type int?

Accepted Answer

A)   int alpha[4][3] = {{0,1,2} {1,2,3} {2,3,4} {3,4,5}};
B)   int alpha[4][3] = {0,1,2; 1,2,3; 2,3,4; 3,4,5};
C)   int alpha[4][3] = {0,1,2: 1,2,3: 2,3,4: 3,4,5};
D)   int alpha[4][3] = {{0,1,2}, {1,2,3}, {2,3,4}, {3,4,5}};E) A) and B)
F) A) and C)

Question 5

After the following statements execute, what are the contents of matrix? int matrix[3][2];
Int j, k;
For (j = 0; j < 3; j++) 
For (k = 0; k < 2; k++) 
Matrix[j][k] = j + k;

Accepted Answer

A)   0 01 12 2
B)   0 12 34 5
C)   0 11 22 3
D)   1 12 23 3E) A) and C)
F) All of the above

Question 6

Consider the following declaration: int alpha[5] = {3, 5, 7, 9, 11};. Which of the following is equivalent to this statement?

Accepted Answer

A)   int alpha[] = {3, 5, 7, 9, 11};
B)   int alpha[] = {3 5 7 9 11};
C)   int alpha[5] = [3, 5, 7, 9, 11];
D)   int alpha[] = (3, 5, 7, 9, 11) ;E) B) and D)
F) A) and C)

Question 7

Consider the statement int list[10][8];. Which of the following about list is true?

Accepted Answer

A)   list has 10 rows and 8 columns.
B)   list has 8 rows and 10 columns.
C)   list has a total of 18 components.
D)   list has a total of 108 components.E) B) and D)
F) A) and D)

Question 8

For a list of length n, the ____________________ sort makes exactly (n(n - 1))/2 key comparisons and 3(n-1) item assignments.

Accepted Answer

The answer of For a list of length n, the...

Question 9

In a two-dimensional array, the elements are arranged in a table form.

Accepted Answer

A) True 
 B)False

Question 10

Consider the following statement: double alpha[10][5];. The number of components of alpha is ____.

Accepted Answer

A)   15
B)   50
C)   100
D)   150E) A) and B)
F) B) and C)

Question 11

The following statement creates alpha to be a two-dimensional array with ____________________ rows.
int alpha[10][25];

Accepted Answer

The answer of The following statement creates alpha to be...

Question 12

All components of an array are of the same data type.

Accepted Answer

A) True 
 B)False  True

Question 13

What is the output of the following C++ code? int list[5] = {0, 5, 10, 15, 20};
int j;
for (j = 0; j \quad cout << list[j] << " ";
cout << endl;

Accepted Answer

A)   0 1 2 3 4
B)   0 5 10 15
C)   0 5 10 15 20
D)   5 10 15 20 E) None of the above
F) A) and B)

Question 14

Consider the following declaration: char charArray[51];
char discard;
Assume that the input is:
Hello There!
How are you?
What is the value of discard after the following statements execute?
cin.get(charArray, 51) ;
cin.get(discard) ;

Accepted Answer

A)   discard = ' ' (Space) 
B)   discard = '!'
C)   discard = '
'
D)   discard = '\0'E) A) and B)
F) B) and D)

Question 15

In the following declaration, the array gamma has ____________________ components.
int gamma[5][6][10];

Accepted Answer

The answer of In the following declaration, the array gamma...

Question 16

The word ____________________ is used before the array declaration in a function heading to prevent the function from modifying the array.

Accepted Answer

The answer of The word ____________________ is used before the...

Question 17

The declaration char str[] = "Hello there"; declares str to be a string of ____________________ characters.

Accepted Answer

12
twelve

Question 18

The statement int list[25]; declares list to be an array of 26 components, since the array index starts at 0.

Accepted Answer

A) True 
 B)False

Question 19

Assume you have the following declaration char nameList[100];. Which of the following ranges is valid for the index of the array nameList?

Accepted Answer

A)   0 through 99
B)   0 through 100
C)   1 through 100
D)   1 through 101E) All of the above
F) A) and B) A

Question 20

Given the following declaration: int j;
Int sum;
Double sale[10][7];
Which of the following correctly finds the sum of the elements of the fifth row of sale?

Accepted Answer

A)   sum = 0;For(j = 0; j Sum = sum + sale[5][j];
B)   sum = 0;For(j = 0; j Sum = sum + sale[4][j];
C)   sum = 0;For(j = 0; j Sum = sum + sale[5][j];
D)   sum = 0;For(j = 0; j Sum = sum + sale[4][j];E) None of the above
F) A) and B)

Exam 8: Arrays and Strings

Arrays can be passed as parameters to a function by value, but it is faster to pass them by reference.

Correct AnswerverifiedShow Answer

Given the following declaration: int j; Int sum; Double sale[10][7]; Which of the following correctly finds the sum of the elements of the fourth column of sale?

Correct AnswerverifiedShow Answer

Which of the following correctly declares name to be a character array and stores "William" in it?

Correct AnswerverifiedShow Answer

Which of the following correctly declares and initializes alpha to be an array of four rows and three columns with the component type int?

Correct AnswerverifiedShow Answer

After the following statements execute, what are the contents of matrix? int matrix[3][2]; Int j, k; For (j = 0; j < 3; j++) For (k = 0; k < 2; k++) Matrix[j][k] = j + k;

Correct AnswerverifiedShow Answer

Consider the following declaration: int alpha[5] = {3, 5, 7, 9, 11};. Which of the following is equivalent to this statement?

Correct AnswerverifiedShow Answer

Consider the statement int list[10][8];. Which of the following about list is true?

Correct AnswerverifiedShow Answer

For a list of length n, the ____________________ sort makes exactly (n(n - 1))/2 key comparisons and 3(n-1) item assignments.

Correct AnswerverifiedShow Answer

In a two-dimensional array, the elements are arranged in a table form.

Correct AnswerverifiedShow Answer

Consider the following statement: double alpha[10][5];. The number of components of alpha is ____.

Correct AnswerverifiedShow Answer

The following statement creates alpha to be a two-dimensional array with ____________________ rows. int alpha[10][25];

Correct AnswerverifiedShow Answer

All components of an array are of the same data type.

Correct AnswerverifiedTrue

What is the output of the following C++ code? int list[5] = {0, 5, 10, 15, 20}; int j; for (j = 0; j < 5; j++) \quad cout << list[j] << " "; cout << endl;

Correct AnswerverifiedShow Answer

Consider the following declaration: char charArray[51]; char discard; Assume that the input is: Hello There! How are you? What is the value of discard after the following statements execute? cin.get(charArray, 51) ; cin.get(discard) ;

Correct AnswerverifiedShow Answer

In the following declaration, the array gamma has ____________________ components. int gamma[5][6][10];

Correct AnswerverifiedShow Answer

The word ____________________ is used before the array declaration in a function heading to prevent the function from modifying the array.

Correct AnswerverifiedShow Answer

The declaration char str[] = "Hello there"; declares str to be a string of ____________________ characters.

Correct Answerverified12 twelve

The statement int list[25]; declares list to be an array of 26 components, since the array index starts at 0.

Correct AnswerverifiedShow Answer

Assume you have the following declaration char nameList[100];. Which of the following ranges is valid for the index of the array nameList?

Correct AnswerverifiedA

Given the following declaration: int j; Int sum; Double sale[10][7]; Which of the following correctly finds the sum of the elements of the fifth row of sale?

Correct AnswerverifiedShow Answer

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True

What is the output of the following C++ code? int list[5] = {0, 5, 10, 15, 20}; int j; for (j = 0; j < 5; j++) $\quad$ cout << list[j] << " "; cout << endl;

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12 twelve

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A

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