Chapter 4 MC2 Review - Computer Programming

What will be the value of ans after the following statements are executed? int x = 40; int y = 40; if (x = y) ans = x + 10;

The code contains an error and will not compile. C

When a character is stored in memory, it is actually the ________ that is stored.

Unicode number C

Enclosing a group of statements inside a set of braces creates

a block of statements. C

Which of the following expressions will determine whether x is less than or equal to y?

x <= y C

What will be displayed after the following statements are executed? int x = 65; int y = 55; if (x >= y) { int ans = x + y; } System.out.println(ans);

120 C

What will be displayed after the following statements are executed? int y = 10; if (y == 10) { int x = 30; x += y; System.out.println(x); }

40 C

Java requires that the boolean expression being tested by an if statement be enclosed in

A set of parenthesis C

The ________ statement is used to create a decision structure which allows a program to have more than one path of execution.

If C

Which of the following statements will create an object from the Random class?

Random myNumber = new Random(); C

A ________ is a boolean variable that signals when some condition exists in the program.

flag C

Which of the following expressions will generate a random number in the range of 1 through 10?

myNumber = randomNumbers.nextInt(10) + 1; C

What will be the value of discountRate after the following statements are executed? double discountRate; char custType = 'B'; switch (custType) { case 'A': discountRate = 0.08; break; case 'B': discountRate = 0.06; case 'C': discountRate = 0.04; default: discountRate = 0.0; }

0.0 C

What will be displayed after the following statements are executed? int hours = 30; double pay, payRate = 10.00; pay = hours <= 40 ? hours*payRate : hours*payRate*2.0; System.out.println(pay);

300.0 C

Which of the following expressions determines whether the char variable, chrA, is not equal to the letter 'A'?

chrA != 'A' C

Which of the following statements determines whether the variable temp is within the range of 0 through 100 (inclusive)?

if (temp >= 0 && temp <= 100) C