Deck 3: Processing and Interactive Input

Question 1

In C, the assignment operator has the highest precedence of all the binary and unary arithmetic operators.

Answer 1

False

Question 2

The cast operator is a binary operator.

Answer 2

False

Question 3

An rvalue refers to any quantity that is valid on the right side of an assignment operator.

Answer 3

True

Question 4

The automatic conversion across an assignment operator is referred to as an implicit type conversion.

Question 5

A special type of assignment statement that is very similar to the accumulating statement is the counting statement.

Question 6

When the -- operator appears before a variable, it is called a postfix decrement operator.

Question 7

When the -- operator appears after a variable, it is called a prefix decrement operator.

Question 8

Robust programs are informally known as "bullet-proof" programs.

Question 9

The format of numbers displayed by printf() can be controlled by field width specifiers included as part of each conversion control sequence.

Question 10

C provides the programmer with the capability to define a value (that will be used throughout a program) once by equating the number to a symbolic name.

Question 11

In C, the equal sign has the same meaning as an equal sign in algebra.

Question 12

In addition to being a constant, the operand to the right of the equal sign in an assignment statement can be a variable or any valid C expression.

Question 13

The expression amount + 1892 = 1000 + 10 * 5 is valid in C.

Question 14

Data type conversions take place across assignment operators.

Question 15

=+ is a valid C operator.

Question 16

In C, log(x) yields the common log of x (base 10).

Question 17

A function can be regarded as a "black box," where the arguments constitute the inputs to the box.

Question 18

The argument to the sqrt function must be an integer value.

Question 19

The arguments passed to a mathematical function must be single constants.

Question 20

The returned value of a function may not be used as an argument to another function.

Question 21

The control string passed to scanf() typically consists of conversion control sequences only.

Question 22

The scanf() function tests the data type of the values being entered.

Question 23

The fflush() function flushes the input buffer of any remaining characters.

Question 24

The order of the format modifiers in printf() is not critical.

Question 25

The statement variable = variable + 1; is equivalent to variable++;.

Question 26

The cast operator has the syntax ____.

A)(dataType expression)
B)(expression dataType)
C)(dataType) expression
D)expression (dataType)

Question 27

In C, the ____ symbol is called the assignment operator.

A)=
B)++
C)--
D)()

Question 28

The term ____ refers to any quantity that is valid on the left side of an assignment operator.

A)leftv
B)lval
C)variable
D)lvalue

Question 29

A previously stored number, if it has not been initialized to a specific and known value, is frequently referred to as a ____.

A)garbage value
B)literal
C)bogus value
D)buffer

Question 30

When the ++ operator appears after a variable, it is called a ____ increment operator.

A)basic
B)standard
C)postfix
D)prefix

Question 31

A(n) ____ is a message that tells the person at the screen what should be typed.

A)prompt
B)input statement
C)scanf
D)printf

Question 32

On most computer systems characters read by the keyboard are stored in a temporary holding area called a ____ immediately after they are pressed.

A)register
B)buffer
C)stack
D)RAM

Question 33

Programs that detect and respond effectively to unexpected user input are formally referred to as ____ programs.

A)standard
B)robust
C)cost-effective
D)abstract

Question 34

Literal values that appear many times in the same program are referred to by programmers as ____ numbers.

A)symbolic
B)magic
C)constant
D)literal

Question 35

____ statements are also called equivalence statements.

A)Assignment
B)Prompt
C)#include
D)#define

Question 36

____ is a valid statement in C.

A)a = 10 = c = 25;
B)a = b = c = 25;
C)2 = b;
D)a - 1 = c;

Question 37

Which of the following statements about rvalues and lvalues is NOT true?

A)Any expression that yields a value can be an rvalue.
B)A variable declared for an array cannot be an rvalue, but individual array variables can be.
C)A variable declared for an array can be an lvalue.
D)Individual numbers can only be an rvalue.

Question 38

The statement ____ shows an implicit conversion.

A)int total = (int) sum;
B)double avg = 0.0;
C)float price = 9.90f;
D)int answer = 2.745;

Question 39

The expression sum = sum + 10 can be written as ____.

A)sum =+ 10
B)sum += 10
C)sum = sum ++ 10
D)sum ++ 10

Question 40

The expression price *= rate + 1 is equivalent to the expression ____.

A)price = price (rate + 1)
B)price = price rate + 1
C)price = (price rate) + 1
D)price = price ^ (rate + 1)

Question 41

The C function ____ yields the result of a value raised to the power of another value.

A)pow
B)exp
C)abs
D)sqrt

Question 42

To access the mathematical functions such as log and sqrt, you must include the following preprocessor statement in your program: ____.

A)#define
B)#include
C)#define
D)#include

Question 43

If you are using a Unix or Linux operating system, you must include the ____ option when compiling a C program that uses the mathematical functions like log and sqrt.

A)-lm
B)-l math.h
C)-math
D)-lib = math

Question 44

The ____ function requires a control string as the first argument inside the function name parentheses.

A)sqrt()
B)pow()
C)scanf()
D)log()

Question 45

Formatted floating-point numbers require ____ field width specifier(s).

A)one
B)two
C)three
D)four

Question 46

Format modifiers, if used, must always be placed immediately after the ____ symbol.

A)!
B)=
C)%
D))

Question 47

The conversion control sequence ____ would cause an integer number to both display its sign and be left-justified in a field width of 10 spaces.

A) %-+10d
B) %-10d
C) %+10d
D) %*10d

Question 48

The ____ sign is a signal to a C preprocessor.

A) !
B) &
C) ;
D) #