True or False? Given the declaration int beta[20]; the statement beta = beta + 1

Question

True or False? Given the declaration int beta[20]; the statement beta = beta + 1; adds 1 to all 20 elements of the array.

True

False

10 points   

QUESTION 2

True or False? In C++, the component type of a one-dimensional array cannot be float, double, or long double.

True

False

10 points   

QUESTION 3

True or False? The array declared as float age[4][5][6][9]; has four dimensions.

True

False

10 points   

QUESTION 4

True or False? A one-dimensional array is an example of a structured data type.

True

False

10 points   

QUESTION 5

True or False? Given the declaration int beta[20]; the statement cout << beta; cannot be used to output all 20 elements of the array.

True

False

10 points   

QUESTION 6

The following code fragment invokes a function named InitToZero:
int alpha[10][20];
InitToZero(alpha);
Which of the following is a valid function heading for InitToZero?

void InitToZero( int beta[][] )

void InitToZero( int beta[10][20] )

void InitToZero( int beta[10][] )

void InitToZero( int beta[][20] )

b and d above

10 points   

QUESTION 7

Choose the most appropriate data structure with which to represent the following: the items on a person's driver's license.

array

record

array of records

hierarchical record

either b or d above

10 points   

QUESTION 8

Choose the most appropriate data structure with which to represent the following: a list of birth records at a hospital.

record

array

array of records

hierarchical record

10 points   

QUESTION 9

Which of the following statements about C++ arrays is true?

Array components cannot be of floating-point types.

The index type of a one-dimensional array can be any data type.

An array component can be treated as a simple variable of its component type.

a and b above

a, b, and c above

10 points   

QUESTION 10

Given the declarations
float x[300];
float y[75][4];
float z[79];
which of the following statements is true?

x has more components than y.

y has more components than x.

y and z have the same number of components.

x and y have the same number of components.

a and c above

A.

void InitToZero( int beta[][] )

B.

void InitToZero( int beta[10][20] )

C.

void InitToZero( int beta[10][] )

D.

void InitToZero( int beta[][20] )

E.

b and d above

Explanation / Answer

Questions with Answers:

Question 1:

True or False? Given the declaration int beta[20]; the statement beta = beta + 1; adds 1 to all 20 elements of the array.

True

False

10 points  

ANS: False

Reason: It doesn’t use subscript and loop to access all elements.

-----------------------------------------------------------------

QUESTION 2

True or False? In C++, the component type of a one-dimensional array cannot be float, double, or long double.

True

False

10 points

ANS: False

---------------------------------------------------------------------------

QUESTION 3

True or False? The array declared as float age[4][5][6][9]; has four dimensions.

True

False

Ans: True

-------------------------------------------------------------------------

QUESTION 4

True or False? A one-dimensional array is an example of a structured data type.

True

False

10 points

ANS: True

---------------------------------------------------------------------------

QUESTION 5

True or False? Given the declaration int beta[20]; the statement cout << beta; cannot be used to output all 20 elements of the array.

True

False

ANS:True

Reason: It doesn’t use loop to access all elements.

-----------------------------------------------------------------------

QUESTION 6

The following code fragment invokes a function named InitToZero:

int alpha[10][20];

InitToZero(alpha);

Which of the following is a valid function heading for InitToZero?

            A.         void InitToZero( int beta[][] )

            B.         void InitToZero( int beta[10][20] )

            C.        void InitToZero( int beta[10][] )

            D.        void InitToZero( int beta[][20] )

            E.         b and d above

ANS: E.          b and d above

Reason: Because A,C didn’t specify column dimension

-----------------------------------------------------------------------------------

QUESTION 7

Choose the most appropriate data structure with which to represent the following: the items on a person's driver's license.

            A.         array

            B.         record

            C.        array of records

            D.        hierarchical record

            E.         either b or d above

ANS: A. array

----------------------------------------------------------------------------

QUESTION 8

Choose the most appropriate data structure with which to represent the following: a list of birth records at a hospital.

            A.         record

            B.         array

            C.        array of records

            D.        hierarchical record  

ANS: C.           array of records

-----------------------------------------------------------------------------------

QUESTION 9

Which of the following statements about C++ arrays is true?

            A.         Array components cannot be of floating-point types.

            B.         The index type of a one-dimensional array can be any data type.

            C.        An array component can be treated as a simple variable of its component type.

            D.        a and b above

            E.         a, b, and c above

ANS: C. An array component can be treated as a simple variable of its component type

-----------------------------------------------------------------------------------------------------------

QUESTION 10

Given the declarations

float x[300];

float y[75][4];

float z[79];

which of the following statements is true?

            A.         x has more components than y.

            B.         y has more components than x.

            C.        y and z have the same number of components.

            D.        x and y have the same number of components.

            E.         a and c above

ANS:

D.        x and y have the same number of components.

Reason: X has 300 components. y has 75*4 => 300 components. So both have

same components

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