TRUE OR FALSE

Question 1

The extraction operator&raquo_space; skips all leading whitespace characters when searching for the next data in the input stream

Answer 1

TRUE

Question 2

In the statement cin&raquo_space; x;, x must be a variable.

Answer 2

TRUE

Question 3

The statement cin&raquo_space; x&raquo_space; y; requires the input values for x and y to appear on the same line.

Answer 3

FALSE

Question 4

The statement cin&raquo_space; num; is equivalent to the statement num&raquo_space; cin;

Answer 4

FALSE

Question 5

You generate the newline character by pressing the Enter (return) key
on the keyboard.

Answer 5

FALSE

Question 6

The function ignore is used to skip certain input in a line.

Answer 6

TRUE

Question 7

The result of a logical expression cannot be assigned to an int variable

Answer 7

FALSE

Question 8

In a one-way selection, if a semicolon is placed after the expression in
an if statement, the expression in the if statement is always true.

Answer 8

TRUE

Question 9

Every if statement must have a corresponding else.

Answer 9

FALSE

Question 10

The expression in the if statement:
if (score = 30)
grade = ‘A’;
always evaluates to true.

Answer 10

TRUE

Question 11

The expression:
(ch >= ‘A’ && ch <= ‘Z’)
evaluates to false if either ch < ‘A’ or ch >= ‘Z’.

Answer 11

TRUE

Question 12

Suppose the input is 5. The output of the code:
cin&raquo_space; num;
if (num > 5)
cout &laquo_space;num;
num = 0;
else
cout &laquo_space;“Num is zero” &laquo_space;endl;
is: Num is zero

Answer 12

TRUE

Question 13

The expression in a switch statement should evaluate to a value of the
simple data type.

Answer 13

TRUE

Question 14

The expression !(x > 0) is true only if x is a negative number.

Answer 14

TRUE

Question 15

In C++, both ! and != are logical operators.

Answer 15

FALSE

Question 16

The order in which statements execute in a program is called the flow of control.

Answer 16

TRUE

Question 17

In a counter-controlled while loop, it is not necessary to initialize the
loop control variable.

Answer 17

FALSE

Question 18

It is possible that the body of a while loop may not execute at all

Answer 18

FALSE

Question 19

In an infinite while loop, the while expression (the decision maker) is
initially false, but after the first iteration it is always true

Answer 19

FALSE

Question 20

The while loop:
j = 0;
while (j <= 10)
j++;
terminates if j > 10

Answer 20

TRUE

Question 21

A sentinel-controlled while loop is an event-controlled while loop
whose termination depends on a special value.

Answer 21

TRUE

Question 22

A loop is a control structure that causes certain statements to execute
over and over.

Answer 22

TRUE

Question 23

To read data from a file of an unspecified length, an EOF-controlled
loop is a good choice.

Answer 23

TRUE

Question 24

When a while loop terminates, the control first goes back to the
statement just before the while statement, and then the control goes
to the statement immediately following the while loop.

Answer 24

FALSE

Question 25

An identifier can be any sequence of digits and letters.

Answer 25

FALSE

Question 26

In C++, there is no difference between a reserved word and a predefined identifier

Answer 26

FALSE

Question 27

A C++ identifier can start with a digit.

Answer 27

FALSE

Question 28

The operands of the modulus operator must be integers.

Answer 28

TRUE

Question 29

If a = 4; and b = 3;, then after the statement a = b; the value of b is still 3.

Answer 29

TRUE

Question 30

In the statement cin >> y;, y can only be an int or a double variable.

Answer 30

FALSE

Question 31

In an output statement, the newline character may be a part of the string.

Answer 31

TRUE

Question 32

The following is a legal C++ program: int main() { return 0; }

Answer 32

TRUE

Question 33

In a mixed expression, all the operands are converted to floating-point numbers.

Answer 33

FALSE

Question 34

Suppose x = 5. After the statement y = x++; executes, y is 5 and x is 6.

Answer 34

TRUE

Question 35

Suppose a = 5. After the statement ++a; executes, the value of a is still 5 because the value of the expression is not saved in another variable.

Answer 35

FALSE

Question 36

The first device known to carry out calculations was the Pascaline

Answer 36

FALSE - answer: abacus

Question 37

Modern-day computers can accept spoken-word instructions but cannot imitate human reasoning.

Answer 37

FALSE - answer: and can imitate human reasoning through artificial intelligence.

Question 38

In ASCII coding, every character is coded as a sequence of 8 bits.

Answer 38

TRUE

Question 39

A compiler translates a high-level program into assembly language.

Answer 39

FALSE - answer: translates high-level program (source code) into machine code

Question 40

The arithmetic operations are performed inside CPU, and if an error is found, it outputs the logical errors

Answer 40

FALSE - answer: compiler (not sure of this answer)

Question 41

A sequence of 0s and 1s is called a decimal code.

Answer 41

FALSE - answer: binary code or binary number

Question 42

A linker links and loads the object code from main memory into the CPU for execution.

Answer 42

FALSE - answer: A linker is a program that combines the object program with other programs in the library and is used in the program to create the executable code.

Question 43

Development of a C++ program includes six steps.

Answer 43

True

Question 44

A program written in a high-level programming language is called a source program.

Answer 44

True

Question 45

ZB stands for zero byte

Answer 45

False. Zettabyte (sextillion)

Question 46

The first step in the problem-solving process is to analyze the problem

Answer 46

True