Deck 4: Control Statements, Assignment, and Operators

Question 1

How many times will the following loop print hello? i = 1;
While (i <= 10) {
Cout << "hello";
}

A) 0.
B) 9.
C) 10.
D) An infinite number of times.

Answer 1

D

Question 2

Which of the following is true of pseudocode?

A) It is executed by the computer.
B) It helps the programmer "think out" a program.
C) It includes declarations and all types of statements.
D) All of the above are false.

Answer 2

B

Question 3

In an activity diagram for an algorithm, what does a solid circle surrounded by a hollow circle represent?

A) Initial state.
B) Final state.
C) Action state.
D) Transition.

Answer 3

B

Question 4

Which of the following encompasses the other three?

A) Sequence structure.
B) Repetition structure.
C) Control structure.
D) Selection structure.

Question 5

Specifying the order in which statements are to be executed in a computer program is called:

A) An algorithm.
B) Transfer of control.
C) Program control.
D) Pseudocode.

Question 6

Which operation does not take place in the following example? int x{21};
Double y{6};
Double z{14};
Y = x / z;
X = 5.5 * y;

A) Implicit conversion.
B) Promotion.
C) Explicit conversion.
D) Truncation.

Question 7

Pseudocode normally does not include:

A) Declarations.
B) Input/output.
C) Algorithms.
D) Control structures.

Question 8

The conditional operator (?:):

A) Is the only ternary operator in C++.
B) Is a unary operator.
C) Associates from left to right.
D) Accepts two operands.

Question 9

What is wrong with the following while loop? while (sum <= 1000) {
Sum = sum - 30;
}

A) The parentheses should be braces.
B) There should be a semicolon after while (sum <= 1000).
C) sum = sum - 30 should be sum = sum + 30 or else the loop may never end.
D) None of the above.

Question 10

A block:

A) Must contain exactly three statements.
B) Cannot contain declarations.
C) Is a compound statement.
D) Is represented by placing a semicolon (;) where a statement would normally be.

Question 11

Using a while loop's counter-control variable in a calculation after the loop ends often causes a common logic error called:

A) A fatal logic error.
B) A counter exception.
C) A syntax error.
D) An off-by-one error.

Question 12

An uninitialized local variable contains:

A) The value last stored in the memory location reserved for that variable.
B) No value.
C) A value of zero.
D) A randomly assigned value.

Question 13

If grade has the value of 60, what will the following code display? if (grade >= 60) {
Cout << "Passed";
}

A) nothing.
B) 60
C) Passed
D) cout << "Passed";

Question 14

The data type bool:

A) Can take on values true and false.
B) Can take on any expression as a value.
C) Can take on values -1, 0 or 1.
D) Can only be used in a selection statement.

Question 15

Which of the following is a double-selection statement?

A) if.
B) if…else.
C) do…while.
D) switch.

Question 16

What is the final value of x after performing the following operations? int x{21};
Double y{6};
Double z{14};
Y = x / z;
X = 5.5 * y;

A) 8.25.
B) 5.5.
C) 5.
D) 8.

Question 17

Which of the following statements about nested if…else statements is true?

A) An if…else statement may not be nested in another nested if…else.
B) Each if…else statement must contain only a simple condition.
C) In an if body, an inner if…else executes only if the outer if statement's condition is true.
D) The statement(s) in an inner if always execute(s) if its condition is true.

Question 18

Which of the following is a repetition structure?

A) if.
B) if…else.
C) do…while.
D) switch.

Question 19

Which of the following is not a keyword that was added to C++ in the new C++11 standard?

A) nullptr.
B) operator.
C) constexpr.
D) noexcept.

Question 20

Which of the following does not display correct if answer is equal to 7 and incorrect if answer is not equal to 7?

A) if (answer == 7) { cout << "correct";
}
Else {
Cout << "incorrect";
}
B) cout << answer == 7 ? "correct" : "incorrect";
C) cout << (answer == 7 ? "correct" : "incorrect");
D) answer == 7 ? cout << "correct" : cout << "incorrect";

Question 21

Which of the following statements initializes the unsigned int variable counter to 10?

A) unsigned int counter = 10;
B) unsigned int counter = {10};
C) unsigned int counter{10};
D) All of the above.

Question 22

Assuming that x is equal to 4, which of the following statements will not result in y containing the value 5 after execution?

A) y = 5;
B) y = x++;
C) y = ++x;
D) y = x + 1

Question 23

Which of the following is true?

A) Assigning a double value to an int does not lose any data.
B) For fundamental-type variables, list-initialization syntax prevents narrowing conversions that could result in data loss.
C) For fundamental-type variables, list-initialization syntax allows narrowing conversions that could result in data loss.
D) None of the above.

Question 24

Assuming that x and y are equal to 3 and 2, respectively, after the statement x -= y executes, the values of x and y will be:

A) x: 5; y: 3
B) x: 3; y: -1
C) x: 3; y: 5
D) x: 1; y: 2

Question 25

Which of the following will not increment c by 1?

A) c + 1;
B) c++;
C) ++c;
D) c += 1;

Question 26

Having a loop within a loop is known as:

A) Recursion.
B) Doubling up.
C) Nesting.
D) Stacking.

Question 27

If x initially contains the value 3, which of the following sets x to 7?

A) x ++ 4;
B) x += 4;
C) x =+ 4;
D) x + 4 = x;

Question 28

Which of the following statements is false?

A) C++ requires all variables to have a type.
B) C++ fundamental types are portable.
C) ints may be 64 bits on some machines.
D) C++ programmers frequently have to write different versions of programs for different platforms.

Question 29

Which of the following operations has the highest precedence?

A) Postincrement.
B) Multiplication.
C) Addition.
D) Assignment.