Csc Midterm

When the computer is turned off, everything in secondary memory is lost. True or False

A variable or expression listed in a call to a funciton is called the ___?

a. data type b. actual parameter c. formal parameter d. type of the function

which of the following will cause a logical error if you are attempting to compare x to 5?

if (x == 5) if (x = 5) if (x <= 5) if (x >= 5)

What is the value of ch3 after the following statements execute?

cin.get(ch1);

cin.get(ch2);

cin.get(ch3);

The identifiers in the system-provided header files such as iostream, cmath, and iomanip are defined in the namespace ____.

cctype

stdl

std

stdlib

The general syntax for accessing a namespace member is: namespace_name->identifier.

True or false

Which of the following is a valid C++ statement?

typedef integer;

typedef int;

typedef int integer;

typedef integer int;

When one control statement is located within another, it is said to be ____.

blocked

compound

nested

closed

Consider the following program segment.

ifstream inFile; //Line 1

int x, y; //Line 2

... //Line 3

inFile >> x >> y; //Line 4

Which of the following statements at Line 3 can be used to open the file progdata.dat and input data from this file into x and y at Line 4?

inFile.open("progdata.dat");

inFile(open,"progdata.dat");

open.inFile("progdata.dat");

open(inFile,"progdata.dat");

Given the following function prototype: int test(float, char);, which of the following statements is valid?

a. cout << test('12', '&');

b. cout << test(12, &);

c. cout << test("12.0", '&');

d. int u = test(5.0, '*');

Consider the following statements:string str1 = "Gone with the wind";string str2;After the statement str2 = str1.substr(5,4); executes, the value of str2 is "____".

Gone

with

the

wind

The ____________________ monitors the overall activity of the computer and provides services such as memory management, input/output activities, and storage management.

Suppose that x = 25.67, y = 356.876, and z = 7623.9674. What is the output of the following statements?

cout << fixed << showpoint;c

out << setprecision(2);

cout << x << ' ' << y << ' ' << z << endl;

25.67 356.87 7623.96

25.67 356.87 7623.97

25.67 356.88 7623.97

25.67 356.876 7623.967

The length of the string "Hello There." is ____________________.

Assembly language uses easy-to-remember instructions called ____________________.

In ____________________ design, the final program is a collection of interacting objects.

A function ____________________ is a function that is not fully coded.

An anonymous type can be passed as a parameter to a function.

In C++, the mechanism that allows you to combine data and operations on the data into a single unit is called a(n) ____________________.

Consider the following statements:

string str1 = "ABCDEFGHIJKLM";

string str2;

After the statement

str2 = str1.substr(1,4); executes, the value of str2 is "____".

ABCD

BCDE

BCD

CDE

The string expression strVar.____________________ starts at index pos, replaces the next ncharacters of strVar with all the characters of str.

What is the output of the following loop?

count = 5;

cout << 'St';

do

{

cout << 'o'; count--;

}

while (count <= 5);

St

Sto

Stop

This is an infinite loop.

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

The execution of a return statement in a user-defined function terminates the program.

A compound statement functions as if it was a single statement.

The memory space for a(n) ____________________ data value is 64 bytes.

Suppose that alpha is an int variable and ch is a char variable and the input is:

17 A

What are the values after the following statements execute?

cin >> alpha;

cin >> ch;

alpha = 17, ch = ' '

alpha = 1, ch = 7

alpha = 17, ch = 'A'

alpha = 17, ch = 'a'

The value of the expression 17 % 7 is ____.

1

2

3

4

The expression in an if statement is sometimes called a(n) ____.

selection statement

action statement

decision maker

action maker

To use the predefined function tolower, the program must include the header file ____.

a.

b.

c.

d.

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

end

unhinged

infinite

definite

If a C++ arithmetic expression has no parentheses, operators are evaluated from left to right.

What is the next Fibonacci number in the following sequence?

1, 1, 2, 3, 5, 8, 13, 21, ...

Consider the declaration:

enum sports {BASKETBALL, FOOTBALL, HOCKEY, BASEBALL, SOCCER};

which of the following statements is true?

SOCCER-- = BASEBALL

BASEBALL++ = SOCCER

HOCKEY + FOOTBALL < SOCCER

FOOTBALL <= SOCCER

The data type of a variable in a return statement must match the function type.

enum cars {FORD, GM, TOYOTA, HONDA};

cars domesticCars = FORD;

The statement:

domesticCars = static_cast(domesticCars + 1);

sets the value of domesticCars to ____.

FORD

GM

TOYOTA

HONDA

iterator

traverse

swap

change

a. function head

b. title

c. function header

d. function signature

WXYZ

What is the value of ch2 after the following statements execute?

cin.get(ch1);

cin.putback(ch1)

;cin >> ch2;

W

X

Y

Z

input, file, list

output, folder, storage

input, output, storage

storage, directory, log

a. 8

b. 10

c. 18

d. 80

sum = 0

sum = 5

sum = 10

sum = 15

0.3

3

3.0

3.3

looping

branching

selection

sequence

n = 1;

while (n < 5)

{

n++;

cout << n << " ";

}

a. cout << myFunc(myFunc(7), 15);

b. cin >> myFunc(y);

c. cin >> myFunc('2', '3');

d. cout << myFunc(myFunc(7, 8), 15);

namespace globalType

{

void printResult();

}

which of the following statements is needed to access printResult?

globalType.printResult();

globalType.printResult;

globalType::printResult();

globalType:printResult();

int i;

for (i = 1; i < 20; i++) c

out << "Hello World";

cout << "!" << endl;

i = 1;

i < 20;

i++;

cout << "Hello World";

4 2 A 12

Choose the values of x, y, and ch after the following statement executes:

cin >> x >> ch >> y;

x = 4, ch = 2, y = 12

x = 4, ch = A, y = 12

x = 4, ch = ' ', y = 2

This statement results in input failure

int strange(int x, int y)

{

if (x > y)return x + y;elsereturn x – y;

}

what is the output of the following statement?

cout << strange(4, 5) << endl;

a. -1

b. 1

c. 9

d. 20

a. Headers end with a semicolon, but prototypes do not.

b. Parameter names must be listed in the prototype, but not necessarily in the header.

c. Headers should come before prototypes.

d. Prototypes end with a semicolon, but headers do not.

-129

‘A’

128

129

sum = 0;

cin >> num;

for (int j = 1; j <= 4; j++)

{

sum = sum + num;

cin >> num;

}

cout << sum << endl;

124

125

126

127

100 110 120

200 210 220

300 310 320

What is the value of gamma after the following statements execute?

cin >> alpha;

cin.ignore(100, '\n');

cin >> beta;cin.ignore(100,'\n');

cin >> gamma;

100

200

300

320

14

15

16

18

In July ____, ANSI/ISO Standard C++ was officially approved.

1996

1998

1999

2000

int x = 35;

int y = 45;

int z;

if (x > y)

z = x + y;

else

z = y – x;

cout << x << " " << y << " " << z << endl;

35 45 80

35 45 10

35 45 –10

35 45 0

the statement

loop condition

the expression

update statement

microframe, midframe, and miniframe

midsize, microframe, and mainframe

mainsize, midsize, and microsize

mainframe, midsize, and micro

OOD

top-down refinement

structured

analog

Assume that all variables are properly declared. The following for loop executes 20 times.

for (i = 0; i <= 20; i++)

cout << i;

For the operator + to work with the string data type, one of the operands of + must be a(n) ____________________ variable.

The devices that the computer uses to display results are called ____ devices.

exit

entry

output

input

Suppose a = 5. After the execution of the statement ++a; the value of a is 6.

Which of the following operators has the lowest precedence?

!

||

&&

=

To develop a program, you can use an informal mixture of C++ and ordinary language, called ____.

assert code

pseudocode

cppcode

source code

The structured design approach is also known as ____________________.

Which of the following function prototypes is valid?

a. int funcTest(int, int y, float z)

b. int funcTest(int, int, float);

c. funcTest(int x, int y, float){};

d. int funcTest(int x, int y, float z){}

The conditional operator ?: takes ____ arguments.

two

three

four

five

Which of the following is a relational operator?

=

==

!

&&

Suppose sum, num, and j are int variables, and the input is 4 7 12 9 -1. What is the output of the following code?

cin >> sum;

cin >> num;

for (j = 1; j <= 3; j++)

{

cin >> num;

sum = sum + num;

}

cout << sum << endl;

24

25

41

42

When reading data into a char variable, after skipping any leading whitespace characters, the extraction operator >> finds and stores only the next character; reading stops after a single character.

Before using the data type string, the program must include the header file ____.

enum

iostream

string

std

Suppose str = "abcd"; After the statement str[1] = 'A'; The value of str is "____________________".

The function eof is a member of the data type ____________________.

Consider the following statements.

int score;

string grade;

if (score >= 65)

grade = "pass";

else grade = "fail";

If score is equal to 75, the value of grade is "____________________".

Suppose that str1, str2, and str3 are string variables. After the following statements execute, the value of str3 is "____".

str1 = "abc";

str2 = "xyz";

str3 = str1 + '-' + str2;

abc

xyz

abc-xyz

xyz-abc

In C++, !, &&, and || are called relational operators.

Suppose str = "abcd". After the statement str = str + "ABCD"; the value of str is "____________________".

The term GB refers to ____.

giant byte

gigabyte

group byte

great byte

A(n) ____-controlled while loop uses a bool variable to control the loop.

counter

sentinel

flag

EOF

The following while loop terminates when j > 20.

j = 0;

while (j < 20)

j++;

The statement: return 2 * 3 + 1, 1 + 5; returns the value ____.

a. 2

b. 3

c. 6

d. 7

In C++, namespace is a reserved word.

The data type string has a named constant, ____________________, associated with it.

The maximum number of significant digits is called the ____________________.

The ____________________ of a function consists of the function name and its formal parameter list.

In C++, ____ is a reserved word.

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

To use a parameterized stream manipulator in a program, you must include the header file ____________________.

Consider the following code. (Assume that all variables are properly declared.)

cin >> ch;

while (cin)

{

cout << ch; cin >> ch;

}

This code is an example of a(n) ____ while loop.

sentinel-controlled

flag-controlled

EOF-controlled

counter-controlled

The memory allocated for a float value is ____ bytes.

two

four

eight

sixteen

When the power is switched off, everything in ____ is lost.

main memory

secondary storage

hard disks

floppy disks

The machine language version of the high-level language program is called a(n) ____________________.

What is the output of the following C++ code?num = 10;

while (num > 10)

num = num - 2;

cout << num << endl;

0

6

8

10

In C++, && has a higher precedence than ||.

Functions that do not have a return type are called ____ functions.

a. zero

b. empty

c. null

d. void

In C++, ____ is called the scope resolution operator.

.

?

:

::

The term ____________________ is used to describe a program that has been written in a high-level language.

In a(n) “____________________” problem, either the loop executes one too many or one too few times.

In a ____ control structure, the computer executes particular statements depending on some condition(s).

looping

repetition

selection

sequence

Suppose that alpha and beta are int variables. The statement alpha = beta--; is equivalent to the statement(s) ____.

alpha = 1 - beta;

alpha = beta - 1;

beta = beta - 1;

alpha = beta;

alpha = beta;

beta = beta - 1;

The command that does the linking on Visual C++ 2010 Express and Visual Studio 2010 is Make or Remake.

It is a good idea to redefine cin and cout in your programs.

Putting ____________________ in front of a logical expression reverses the value of that logical expression.

C++ comes with a wealth of functions, called ____________________ functions, that are written by other programmers.

An example of a floating point data type is ____.

int

char

double

short

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

The devices that feed data and programs into computers are called ____ devices.

entry

input

output

secondary

The result of a logical expression cannot be assigned to an int variable, but it can be assigned to a boolvariable.

If a(n) ____________________ statement is placed in a do...while structure, the loop-continue test is evaluated immediately after this statement.

Main memory is directly connected to the CPU.

A for loop is typically called a counted or ____________________ for loop.

The stream function ____________________ lets you put the last character extracted from the input stream by the get function back into the input stream.

cin is called a(n) ____________________ object.

The string expression strVar.____________________ inserts all the characters of str at index posinto strVar.

The output of the statement:

cout << tolower('$') << endl;

is ____.

a. '$'

b. '0'

c. '1'

d. An error, because you cannot use tolower with '$'.

Using functions greatly enhances a program’s readability because it reduces the complexity of the function main.

A(n) ____________________ is a collection of statements, and when it is activated, or executed, it accomplishes something.

The smallest individual unit of a program written in any language is called a(n) ____________________.

A(n) ____ consists of data and the operations on those data.

disk

compiler

interpreter

object

Suppose str = "ABCDEFGHI". The output of the statement

cout << str.length() << endl; is ____.

7

8

9

10

What is the value of x after the following statements execute?

int x;

x = (5 <= 3 && 'A' < 'F') ? 3 : 4

2

3

4

5

When a value of one data type is automatically changed to another data type, a(n) ____________________ type coercion is said to have occurred.

The extraction operator >> skips only all leading blanks when searching for the next data in the input stream.

An enumeration type can be passed as a parameter to a function only by value.

No arithmetic operations are allowed on the enumeration type.

In C++, [] is called the array subscript operator.

The following statements will result in input failure if the input values are not on a separate line. (Assume that x and y are int variables.)

cin >> x;

cin >> y;

The expression static_cast(9.9) evaluates to ____.

Word processors, spreadsheets, and games are examples of ____________________.

Considering the statement string str = "Gone with the wind";, the output of the statementcout << str.find("the") << endl; is ____.

____________________ rules determine the meaning of instructions.

When you want to process only partial data, you can use the stream function ____ to discard a portion of the input.

clear

skip

delete

ignore

To develop a program to solve a problem, you start by ____.

analyzing the problem

implementing the solution in C++

designing the algorithm

entering the solution into a computer system

For a program to use the assert function, it must include which of the following?

#include assert

#include cassert

#include assertc

#include NDEBUG

Suppose that ch1 and ch2 are char variables, alpha is an int variable, and the input is:

A 18

What are the values after the following statement executes?

cin.get(ch1);

cin.get(ch2);

cin >> alpha;

ch1 = 'A', ch2 = ' ', alpha = 18

ch1 = 'A', ch2 = '1', alpha = 8

ch1 = 'A', ch2 = ' ', alpha = 1

ch1 = 'A', ch2 = '\n', alpha = 1

The ____ is the brain of the computer and the single most expensive piece of hardware in your personal computer.

MM

ROM

RAM

CPU

Suppose that x is an int variable, y is a double variable, z is an int variable, and the input is:

15 76.3 14

Choose the values after the following statement executes:

cin >> x >> y >> z;

x = 15, y = 76, z = 14

x = 15, y = 76, z = 0

x = 15, y = 76.3, z = 14

x = 15.0, y = 76.3, z = 14.0

____ are executable statements that inform the user what to do.

Variables

Prompt lines

Named constants

Expressions

An operator that has only one operand is called a unique operator.

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.

The declaration int a, b, c; is equivalent to which of the following?

inta , b, c;

int a,b,c;

int abc;

int a b c;

Which of the following is the “not equal to” relational operator?

In C++, the logical operator AND is represented by ____________________.

Suppose that alpha and beta are int variables. The statement alpha = --beta; is equivalent to the statement(s) ____.

____ is a parameterized stream manipulator.

endl

fixed

scientific

setfill

Consider the following code.

// Insertion Point 1

using namespace std;

const float PI = 3.14;

int main()

{

//Insertion Point 2

float r = 2.0;

float area;

area = PI * r * r;

cout << "Area = " << area << endl;

return 0;

}

// Insertion Point 3

where does the include statement belong?

Consider the following code.

int limit;

int reps = 0;

cin >> limit;

while (reps < limit)

{

cin >> entry;

triple = entry * 3;

cout << triple;

reps++;

}

cout << endl;

This code is an example of a(n) ____ while loop

flag-controlled

counter-controlled

EOF-controlled

sentinel-controlled

Suppose that x and y are int variables, z is a double variable, and the input is:

28 32.6 12

Choose the values of x, y, and z after the following statement executes:

cin >> x >> y >> z;

x = 28, y = 32, z = 0.6

x = 28, y = 32, z = 12.0

x = 28, y = 12, z = 32.6

x = 28, y = 12, z = 0.6

Suppose that count is an int variable and count = 1. After the statement count++; executes, the value of count is ____.

1

2

3

4

A program called a(n) ____ combines the object program with the programs from libraries.

assembler

decoder

linker

compiler

Suppose that ch1 and ch2 are char variables and the input is:

WXYZ

What is the value of ch2 after the following statements execute?

cin >> ch1;

ch2 = cin.peek();

cin >> ch2;

W

X

Y

Z

Assume the following.

static_cast('a') = 97

static_cast('A') = 65

The output of the statement:

cout << static_cast(tolower('B')) << endl; is ____.

a. 65

b. 67

c. 96

d. 98

____ consists of 65,536 characters.

ASCII-8

ASCII

Unicode

EBCDIC

Suppose that str1 and str2 are string variables. After the following statements execute, the value ofstr2 is "____________________".

str1 = "abc";

str2 = str1 + '-';

str2 = str2 + "xyz";

The ____ statement can be used to eliminate the use of certain (flag) variables.

while

switch

break

if

If the formal parameter list of a function is empty, the parentheses after the function name are not needed.

Entering a char value into an int variable causes serious errors, called input failure.

Suppose that alpha and beta are int variables. The statement alpha = ++beta; is equivalent to the statement(s) ____.

____ is a valid int value.

46,259

46259

462.59

-32.00

The basic commands that a computer performs are input (get data), output (display result), storage, and performance of arithmetic and logical operations.

In a C++ program, ____________________ are used to separate special symbols, reserved words, and identifiers.

The functions get, ignore, and so on are members of the data type ____________________.

Suppose that outFile is an ofstream variable and output is to be stored in the file outputData.out. Which of the following statements opens the file outputData.out and associates outFile to the output file?

outFile("outputData.out");

outFile.open("outputData.out");

open(outFile,"outputData.out");

open.outFile("outputData.out");

____________________ functions are those that have already been written and are provided as part of the system.

The following is a valid C++ enumeration type:

enum places {1ST, 2ND, 3RD, 4TH};.

Information stored in main memory must be transferred to some other device for permanent storage.

Given the function prototype: double testAlpha(int u, char v, double t); which of the following statements is legal?

a. cout << testAlpha(5, 'A', 2);

b. cout << testAlpha(5.0, "65", 2.0);

c. cout << testAlpha( int 5, char 'A', int 2);

d. cout << testAlpha('5.0', 'A', '2.0');

The manipulator ____________________ is used to output the value of an expression in a specific number of columns.

What does <= mean?

less than

greater than

less than or equal to

greater than or equal to

Suppose found = true and num = 6. The value of the expression (!found) || (num > 6) is ____________________.

The scope of a namespace member is local to the ____.

function

block

file

namespace

The values in the domain of an enumeration type are called ____________________.

Manipulators without parameters are part of the ____ header file.

iostream

iomanip

ifstream

pmanip

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

if

switch

while...do

do...while

The following return statement returns the value 10.return 10, 16;

Putting a semicolon after the parentheses following the expression in an if statement (that is, before the statement) is a(n) ____________________ error.