Deck 2: Using Data

Question 1

In C#, += adds the operand on the right to the operand on the left and assigns it to the operand on the left in one step.What is the name for this operator?

A) prefix increment
B) postfix increment
C) add and assign
D) increment and assign

Answer 1

C

Question 2

When using arithmetic operations with operands of dissimilar types, an automatic conversion of nonconforming operands to a unifying type occurs.What is this conversion process called?

A) implicit cast
B) explicit cast
C) manual cast
D) level cast

Answer 2

A

Question 3

You are performing an arithmetic operation and have placed the desired result type in parentheses followed by a variable to be cast with the result.What is this an example of?

A) implicit casting
B) automatic casting
C) intrinsic casting
D) explicit casting

Answer 3

D

Question 4

The equal sign (=) is the C# assignment operator.

Question 5

You can concatenate two strings with the plus (+) sign.

Question 6

What uses curly braces containing a number that indicates the desired position for a variable in a list that follows a string used for formatting purposes?

A) format string
B) whitespace
C) namespace
D) placeholder

Question 7

What type of expression has a Boolean value as a result?

A) decrement
B) comparison
C) assignment
D) unifying

Question 8

What type of operator can be used to reduce a variable's value by 1 either at time of evaluation, or after it is evaluated, depending on placement?

A) increment operator
B) sub and assign operator
C) add and assign operator
D) decrement operator

Question 9

What data type can be used to hold a series of characters?

A) int
B) string
C) sbyte
D) char

Question 10

An assignment that is made when a variable is declared is known as what?

A) A definition of the variable
B) An allocation of the variable
C) An assignment to the variable
D) An initialization of the variable

Question 11

What is the term for a named location in computer memory that can hold different values at different points in time?

A) variable
B) constant
C) literal constant
D) alias

Question 12

In the C# statement moneyString = someMoney.ToString("F3"), what is "F3" an example of?

A) literal constant
B) standard numeric format string
C) named constant
D) intrinsic type

Question 13

What is the name for a series of characters used to control the appearance of text output?

A) A declared namespace
B) A set placeholder
C) A defined format string
D) Carefully placed whitespace

Question 14

What type of arithmetic operator has one argument to the left and another argument to the right of the operator?

A) binary
B) complex
C) composite
D) unary

Question 15

What data type can be used to hold any single character, including numbers and non-printing characters?

A) char
B) string
C) bool
D) int

Question 16

An escape sequence is used to represent special characters such as a carriage return or a tab, and always begins with a backslash.

Question 17

someValue++ is an example of the use of the prefix increment operator.

Question 18

What type of number can be described as having varying numbers of significant digits, which contains decimal positions?

A) integer
B) whole
C) floating-point
D) int

Question 19

How is a Boolean variable declared in a program?

A) A char type variable must be declared, optionally followed by a bool value.
B) A bool type variable must be declared, optionally followed by a bool value.
C) An int type variable must be declared, optionally followed by a bool value.
D) A boolean type variable must be declared, optionally followed by a bool value.

Question 20

Operator precedence rules ensure that addition and subtraction always take place prior to multiplication, division, or remainder in an expression.

Question 21

What method from the Convert class can be used to convert a specified value to an 8-bit unsigned integer?

A) ToDecimal()
B) ToSingle()
C) ToInt16()
D) ToByte()

Question 22

What happens when "string1" is added to "string2" using the + sign in the C# programming language?

A) The strings are concatenated together.
B) The strings are converted to integer equivalents and then added together.
C) The result is returned as a Boolean value.
D) A type error occurs, and the program is halted.

Question 23

What statement regarding operator precedence is accurate?

A) Multiplication, division, and addition always take place prior to the calculation of a remainder.
B) Operations that are placed in parentheses are evaluated first.
C) Operations are always evaluated left to right, regardless of the expressions.
D) Addition and subtraction operations are evaluated first.

Question 24

What is a variable declaration, what is its purpose, and what does the declaration include?

Question 25

What method can be used to accept user input from the keyboard on the console?

A) Next()
B) NextLine()
C) ReadLine()
D) Input()

Question 26

What keyword can be used to create a named identifier for a memory location whose contents cannot change?

A) final
B) static
C) const
D) fix

Question 27

What method can be used as an alternative to the Convert class methods to change a string into a number?

A) Cast()
B) Parse()
C) Assign()
D) Write()

Question 28

What are the three floating-point data types in C#? Briefly describe the characteristics of each type.

Question 29

When running a program, an instruction to the user to enter data for the program to process is known by what term?

A) line
B) prompt
C) cue
D) hint

Question 30

What is NOT part of a variable declaration in the C# programming language?

A) The data type the variable will store.
B) The variable's name.
C) An optional assignment operator and assigned value.
D) The variable's associated parent class.

Question 31

What operator is used for exponentials in the C# programming language?

A) ^
B) %
C) *
D) None of the above.

Question 32

How is a named constant different from a variable? How would you create a named constant (and show an example)?

Question 33

What are the nine integral data types in C# and how do you decide which is the most appropriate to use in a particular situation?

Question 34

What are the differences between the prefix increment operator and postfix increment operator?

Question 35

How can you compare strings using the Compare() method?

Question 36

Explain why implicit numeric conversions are necessary and how C# chooses operands to convert.

Question 37

Explain how to use the C# shortcut arithmetic operators -=, *=, and /=.

Question 38

What is the purpose of the ReadLine() method? How would you use it with a variable of type string? How would you use it with a variable of type double?

Question 39

What type of program specifically allows and accepts user input?

A) interactive program
B) static program
C) constant program
D) procedural program