created: May 17, 1998

Quiz: More Decisions

This is a practice quiz. The results are not recorded anywhere and do not affect your grade. The questions on this quiz might not appear in any quiz or test that does count toward your grade.

Instructions: For each question, choose the single best answer. Make your choice by clicking on its button. You can change your answers at any time. When the quiz is graded, the correct answers will appear in the box after each question.

1. Evaluate (to true or false) each of the following expressions:


1 + 2 == 3      25 < 5 * 5      8 + 1 >= 3 * 3

a. true true true

b. true true false

c. true false true

d. false true true

2. Evaluate (to true or false) each of the following expressions:


1 + 2 == (3 + 9) / 4     12 <= 2 + 2 * 3      2 * 2 + 5 != (1 + 2) * 3

a. false false false

b. false false true

c. false true false

d. true false false

3. What does the following code fragment write to the monitor?


int height = 10;
if ( height <= 12 )
  System.out.print("Low bridge: ");
System.out.println("proceed with caution.");

a. Nothing is written.

b. Low bridge:

c. proceed with caution.

d. Low bridge: proceed with caution.

4. What does the following code fragment write to the monitor?


int height = 15;
if ( height <= 12 )
{
  System.out.print("Low bridge: ");
  System.out.println("proceed with caution.");
}

a. Nothing is written.

b. Low bridge:

c. proceed with caution.

d. Low bridge: proceed with caution.

5. What does the following code fragment write to the monitor?


int depth =  8 ;
if ( depth >= 8 )
{
  System.out.print("Danger: ");
  System.out.print("deep water. ");
}
System.out.println("No swimming allowed.");

a. Danger:

b. Danger: deep water.

c. deep water. No swimming allowed.

d. Danger: deep water. No swimming allowed.

6. What does the following code fragment write to the monitor?


int depth =  4 ;
if ( depth >= 8 )
  System.out.print("Danger: ");
  System.out.print("deep water. ");
  System.out.println("No swimming allowed.");

(Notice that changes have been made from the previous question.)

a. Danger:

b. No swimming allowed.

c. deep water. No swimming allowed.

d. Danger: deep water. No swimming allowed.

7. Evaluate (to true or false) each of the following expressions:


10.0 + 0.10 < 11.0       10.0 + 0.10 > 10.0       10.0 + 0.10 == 10.1

a. true true unknown

b. true true true

c. unknown unknown unknown

d. false true true

8. Fill in the blank so people under 21 years are offered Grape Soda.


int age =  17 ;
if ( age  _________ 21 )
  System.out.println("Care for some Grape Soda?");
else
  System.out.println("How about a Brewski?");

a. <

b. ==

c. !=

d. >=

9. Fill in the blank so people under 21 years are offered Grape Soda. (Notice that the program is changed from the last question.)


int age =  17 ;
if ( age  _________ 21 )
  System.out.println("How about a Brewski?");
else
  System.out.println("Care for some Grape Soda?");

a. <

b. ==

c. !=

d. >=

10. What does the following code fragment write to the monitor?


int depth =  12 ;
int temp  =  42 ;

System.out.print("The water is: ")
if ( depth >= 8 )
  System.out.print("deep ");

if ( temp <= 50 )
  System.out.print("cold ");

System.out.println(" wet.");

a. The water is:

b. The water is: wet.

c. The water is: deep cold wet.

d. The water is wet cold deep.

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