Chapter 4 Quiz Starting Out With C++ 047

Can you have two variables with the same name in C++?

a. only if they are in the same scope
b. only if they are in different blocks
c. if one of the variables is in a function
d. heck, I wasn't listening when we went over this. idk

Chapter 4 Quiz Starting Out With C++ 046

The switch statement lets the value of a variable or expression determine where the program will branch in an if/else statement

a. true
b. false

Chapter 4 Quiz Starting Out With C++ 045

Since it takes three operands, the conditional operator is considered a
ternary operator.

a. true
b. false

Chapter 4 Quiz Starting Out With C++ 044

Which of the following is an example of a conditional operator?

a.
x > y ? z=1 : z=0;

b.
if (x>y)
   z=1
else
  z=0;

c.
if x>y then z=1 else z=0

d.
? (x>y) : z=1 : z=0;

Chapter 4 Quiz Starting Out With C++ 043

The conditional operator works like an if/else statement

a. true
b. false

Chapter 4 Quiz Starting Out With C++ 042

What do the ASCII values 65 through 90 represent?

a. the numbers from 65 through 90 as integers.
b. the characters 'a' through 'z'
c. the characters 'A' through 'Z'
d. the characters '0' through '9'
e. none.  ASCII is obsolete and no longer used.

Chapter 4 Quiz Starting Out With C++ 041

The highest or of precedence in C++ is

a. ||
b. !
c. &&
d. they are all the same.  Left to right

Chapter 4 Quiz Starting Out With C++ 040

Precedence is not important in C++

a. true
b. false

Chapter 4 Quiz Starting Out With C++ 039

What does || mean in C++?

a. OR
b. NOT
c. EITHER

Chapter 4 Quiz Starting Out With C++ 038

What is the value of the following expression?

true && false

a. true
b. false
c. can't tell
d. the expression makes no sense in C++

Chapter 4 Quiz Starting Out With C++ 037

In C++, the ______ operator reverses the "truth" of an expression.  It makes a true expression false and a false expression true.

a. &&
b. !
c. ||
d. reverse()
e. none of the above

Chapter 4 Quiz Starting Out With C++ 036

_____ operators connect two or more relational expressions into one or reverse the logic of an expression?

a. syntax
b. binary
c. logical
d. combinatory
e. answer b and c

Chapter 4 Quiz Starting Out With C++ 035

What is typically used as a flag in C++

a. a float
b. an integer
c. a bool
d. a register
e. b and c
ab. answer c is typical but answer b is also used by some
ae. none of the above.  C++ does not have access to the AX or BX flags of the CPU

Chapter 4 Quiz Starting Out With C++ 034

The potential round-off errors are common if the user is not careful when the user uses the equality operator to compare floating point values.

a. true
b. false

Chapter 4 Quiz Starting Out With C++ 033

What is the operator that can be used for the logical AND ?

a. &&
b. ++
c. ||
d. @
e. AND

Chapter 4 Quiz Starting Out With C++ 032

What is the value for a relational operation when it is not true?

a. one
b. zero
c. zero, one, or minus one
d. less than zero

Chapter 4 Quiz Starting Out With C++ 031

The following C++ statement will let the variable decide where the program will go to.

a. select
b. associative
c. scope
d. switch
e. none of the above

Chapter 4 Quiz Starting Out With C++ 030

When you use input values, the user should check for the following:

a. Appropriate range
b. Reasonableness
c. Division by zero, if division is taking place
d. All of these
e. None of the above

Chapter 4 Quiz Starting Out With C++ 029

An if statement considers true any value that is NOT 0 (ZERO)

a. true
b. false

Chapter 4 Quiz Starting Out With C++ 028

When a user writes an if statement, the user should indent the statements that get executed conditionally based on programming style.

a. true
b. false