AP Computer Science A Quiz

What is printed as a result of executing the following code segment? System.out.println("W"); System.out.println("X"); System.out.print("Y"); System.out.print("Z");

• W X YZ

• W XYZ

• WX YZ

• WXYZ

What is printed as a result of executing the following code segment? System.out.print("cat "); System.out.println("dog "); System.out.println("horse "); System.out.print("cow ");

• cat dog horse cow

• cat dog horse cow

• cat dog horse cow

• cat dog horse cow

What is printed as a result of executing the following code segment? System.out.print("Hello!"); System.out.println("How "); System.out.print("are "); System.out.print("you?");

• Hello! How are you?

• Hello!How are you?

• Hello!How are you?

• Hello!Howareyou?

Which of the following changes can be made so that the following code segment produces the intended output? System.out.println(hello); // Line 1 System.out.print(world); // Line 2 hello world

• Changing println in line 1 to print

• Inserting System.out.println(); between lines 1 and 2

• Enclosing hello in line 1 and world in line 2 in quotation marks

• Inserting System.out.print(); between lines 1 and 2

Which change can be made so that the following code segment produces the intended output? System.out.print("Ready"); // Line 1 System.out.print("Set"); // Line 2 System.out.print("Go!"); // Line 3 Ready Set Go!

• Interchanging lines 1 and 3

• Changing print to println in lines 1 and 2

• Changing print to println in line 3

• No change is needed; the code segment works correctly as is.

Which of the following code segments works as intended to print the word Hello? I. System.out.print("Hello"); II. System.out.print(Hello); III. System.out.print(He); System.out.print(llo);

• I and II

• II only

• I and III

• I only

Which statement correctly declares a variable that can store a temperature rounded to the nearest tenth of a degree?

• patientTemp = 0;

• int patientTemp;

• double patientTemp;

• boolean patientTemp;

Which of the following is most appropriate to replace /*missing code*/ in the program to compute student percentages?

• double totalPoints; boolean percentage;

• int totalPoints; double percentage;

• int totalPoints; int percentage;

• double totalPoints; int percentage;

Which of the following best describes the data types that should be used to replace /*data type 1*/ and /*data type 2*/ so that the code segment compiles without error? /*data type 1*/ x = 0.5; /*data type 2*/ y = true;

• The variable x should be declared as an int and the variable y should be declared as a boolean.

• The variable x should be declared as a double and the variable y should be declared as an int.

• The variable x should be declared as a boolean and the variable y should be declared as a boolean.

• The variable x should be declared as a double and the variable y should be declared as a boolean.

Which of the following can be used as a replacement for /*missing expression*/ so that the code segment prints 9 4? int x; int y; x = 3; y = /*missing expression*/; x = 1 + 2 * y; System.out.print(x); System.out.println(y);

• 1 - 2 * x

• 3

• x

• x - 1