AP CSA MC

Consider the following code segment. System.out.print("*"); System.out.println("**"); System.out.println("***"); System.out.print("****"); What is printed as a result of executing the code segment?

*** *** ****

Consider the following code segment. double d = 0.25; int i = 3; double diff = d - i; System.out.print((int)diff - 0.5); What is printed as a result of executing the code segment?

-2.5

Consider the following code segment. int j = 10; int k = 8; j += 2; k += j; System.out.print(j); System.out.print(" "); System.out.println(k); What is printed when the code segment is executed?

12 20

Consider the following code segment. int a = 4; int b = 5; a++; b++; int c = a + b; a -= 1; System.out.println(a + c); What is printed when the code segment is executed?

15

What is printed as a result of executing the following statement? System.out.println(404/10*10+1)

401

Consider the following code segment. int a = 5; int b = 8; int c = 3; System.out.println(a + b / c * 2); What is printed as a result of executing this code?

9

Consider the following code segment. System.out.print("AP"); System.out.println(); System.out.println("CS"); System.out.print("A"); What is printed as a result of executing the code segment?

AP CS A

Consider the following code segment. int x = 4; int y = 6; x -= y; y += x; Which of the following best describes the behavior of the code segment?

Both the value of x and the value of y have been decreased.

Consider the following code segment. System.out.print("One"); // Line 1 System.out.print("Two"); // Line 2 System.out.print("Three"); // Line 3 System.out.print("Four"); // Line 4 The code segment is intended to produce the following output, but does not work as intended. OneTwo ThreeFour Which of the following changes can be made so that the code segment produces the intended output?

Changing print to println in line 2 only

Consider the following code segment. System.out.print("Ready"); // Line 1 System.out.print("Set"); // Line 2 System.out.print("Go!"); // Line 3 The code segment is intended to produce the following output but may not work as intended. Ready Set Go! Which change, if any, can be made so that the code segment produces the intended output?

Changing print to println in lines 1 and 2

Consider the following code segment, which is intended to display 6.0. double fact1 = 1 / 2; double fact2 = 3 * 4; double product = fact1 * fact2; System.out.println(product); Which of the following best describes the error, if any, in the code segment?

Either the numerator or the denominator of the fraction 1 / 2 should be cast as double.

Consider the following code segment. System.out.println(hello); // Line 1 System.out.print(world); // Line 2 The code segment is intended to produce the following output but does not work as intended. hello world Which of the following changes can be made so that the code segment produces the intended output?

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

Consider the following code segment. System.out.print("Hello System.out.println"); System.out.print("!!!"); What is printed as a result of executing the code segment? A Hello!!! B Hello System.out.println!!! C Hello !!! D Hello System.out.println !!! E Nothing is printed because the text "System.out.println" cannot appear inside a print statement.

Hello System.out.println!!!

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

Hello!How are you?

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

I only

In the code segment below, assume that the int variable n has been properly declared and initialized. The code segment is intended to print a value that is 1 more than twice the value of n. /* missing code */ System.out.print(result); Which of the following can be used to replace /* missing code */ so that the code segment works as intended? I. int result = 2 * n;result = result + 1; II. int result = n + 1;result = result * 2; III. int result = (n + 1) * 2;

I only

Which of the following expressions evaluate to 3.5 ? I. (double) 2 / 4 + 3 II. (double) (2 / 4) + 3 III. (double) (2 / 4 + 3)

I only

Consider the following code segment. int x = 10; int y = 20; /* missing code */ System.out.print(top / bottom); Which of the following replacements for /* missing code */ will cause an ArithmeticException to occur? int top = x - y;int bottom = y - x; int top = 2 * x;int bottom = y - top; int top = x + y;int bottom = 2 * top;

II only

Consider the following code segment, which is intended to calculate the average of two quiz scores. double avg = 15 + 20; avg /= 2; Which of the following best describes the behavior of the code segment?

The code segment stores 17.5 in avg because 17.5 is the result of the floating point division of 35.0 by 2.

Consider the following code segment, which is intended to display 0.5. int num1 = 5; int num2 = 10; double ans = num1 / num2; System.out.print(ans); Which of the following best describes the error, if any, in the code segment?

The code should have cast either num1 or num2 in the expression num1 / num2 to double.

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

W X YZ

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

cat dog horse cow

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

double patientTemp;

Consider the following code segment, which is intended to print the digits of the two-digit int number num in reverse order. For example, if num has the value 75, the code segment should print 57. Assume that num has been properly declared and initialized. /* missing code */ System.out.print(onesDigit); System.out.print(tensDigit); Which of the following can be used to replace /* missing code */ so that the code segment works as intended?

int onesDigit = num % 10; int tensDigit = num / 10;

A teacher determines student percentages in a course as the points a student earns divided by the total points available in the grading period. Points are awarded only in whole number increments, but student percentages are to be stored as decimals. The following code segment appears in a program used to compute student percentages. Points that a student earns are stored in pointsEarned, the total points available in the grading period are stored in totalPoints, and the student percentage is stored in percentage. int pointsEarned; /* missing code */ Which of the following is most appropriate to replace /* missing code */ in the program?

int totalPoints; double percentage;

Which of the following statements stores the value 3 in x ?

int x = 8 % 5;

Consider the following code segment. int x; int y; x = 3; y = /* missing expression */; x = 1 + 2 * y; System.out.print(x); System.out.println(y); Which of the following can be used as a replacement for /* missing expression */ so that the code segment prints 94 ?

x + 1

The following code segment is intended to interchange the values of the int variables x and y. Assume that x and y have been properly declared and initialized. int temp = x; /* missing code */ Which of the following can be used to replace /* missing code */ so that the code segment works as intended?

x = y; y = temp;

Which of the following arithmetic expressions evaluates to 1 ? 2 / 5 % 3 2 / (5 % 3) 2 / 5 + 1

II and III only

Consider the following code segment. int x = /* initial value not shown */; int y = /* initial value not shown */; int z = x; z /= y; z += 2; Which of the following best describes the behavior of the code segment?

It sets z to (x / y) + 2.

Consider the following code segment. double p = 10.6; double n = -0.2; System.out.println((int) (p + 0.5)); System.out.print((int) (n - 0.5)); What is printed as a result of executing the code segment?

11 0

Consider the code segment below. int x = 10; int y = 20; System.out.print(y + x / y); What is printed as a result of executing the code segment?

20

Consider the following code segment. int a = 3 + 2 * 3; int b = 4 + 3 / 2; int c = 7 % 4 + 3; double d = a + b + c; What is the value of d after the code segment is executed?

20.0

Consider the following code segment. double a = 7; int b = (int) (a / 2); double c = (double) b / 2; System.out.print(b); System.out.print(" "); System.out.print(c); What is printed as a result of executing the code segment?

3 1.5

Consider the following code segment. int a = 1; int b = 2; int c = 3; int d = 4; double x = a + b * c % d; What is the value of x when the code segment has been executed?

3.0

Consider the following code segment. int num = 5; num *= 2; num %= 6; What is the value of num after the code segment is executed?

4

Consider the following code segment. int x = 0; x++; x += 1; x = x + 1; x -= -1; System.out.println(x); What is printed when the code segment has been executed?

4

The volume of a cylinder is equal to the height times the area of the circular base. The area of the circular base is equal to π (pi) times the square of the radius. The code segment below is intended to compute and print the volume of a cylinder with radius r and height h. Assume that the double variables r, h, and pi have been properly declared and initialized. /* missing code */ System.out.print(volume); Which of the following can be used to replace /* missing code */ so that the code segment works as intended? double baseArea = pi * r * r;double volume = baseArea * h; double volume = pi * r * r;volume = volume * h; double volume = pi * r * r * h;

I, II, and III

Consider the following code segment. System.out.print(I do not fear computers. ); // Line 1 System.out.println(I fear the lack of them.); // Line 2 System.out.println(--Isaac Asimov); // Line 3 The code segment is intended to produce the following output but may not work as intended. I do not fear computers. I fear the lack of them. --Isaac Asimov Which change, if any, can be made so that the code segment produces the intended output?

In lines 1, 2, and 3, the text that appears in parentheses should be enclosed in quotation marks.

Consider the following code segment. System.out.print(*); // Line 1 System.out.print("*"); // Line 2 System.out.println(); // Line 3 System.out.println("*"); // Line 4 The code segment is intended to produce the following output, but may not work as intended. ** * Which line of code, if any, causes an error?

Line 1

A store sells rope only in whole-foot increments. Given three lengths of rope, in feet, the following code segment is intended to display the minimum length of rope, in feet, that must be purchased so that the rope is long enough to be cut into the three lengths. For example, for lengths of 2.8 feet, 3 feet, and 5 feet, the minimum length of rope that must be purchased is 11 feet. For these inputs, the code segment should display 11. As another example, for lengths of 1.1 feet, 3.2 feet, and 2 feet, the minimum length of rope that must be purchased is 7 feet. For these inputs, the code segment should display 7. double len1; double len2; double len3; double total = len1 + len2 + len3; int minLength = (int) (total + 0.5); System.out.print(minLength); Which of the following best describes the behavior of the code segment?

The code segment works as intended but only when the sum of the three lengths is an integer or the decimal part of the sum of the three lengths is greater than or equal to 0.5.

Consider the following code segment: /* data type 1 */ x = 0.5; /* data type 2 */ y = true; 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?

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

Consider the method getHours, which is intended to calculate the number of hours that a vehicle takes to travel between two mile markers on a highway if the vehicle travels at a constant speed of 60 miles per hour. A mile marker is a sign showing the number of miles along a road between some fixed location (for example, the beginning of a highway) and the current location. The following table shows two examples of the intended behavior of getHours, based on the int parameters marker1 and marker2. marker1marker2Return Value1002202.0100700.5 Consider the following implementation of getHours. public static double getHours(int marker1, int marker2) { /* missing statement */ return hours; } Which of the following statements can replace /* missing statement */ so getHours works as intended?

double hours = Math.abs(marker1 - marker2) / 60.0;