Exam 5: Making Decisions

When using equals and not equals for comparisons with objects, you compare the objects' ____ instead of actual values.

Create an if statement that checks if the variable salesAmt is greater than or equal to the QUOTA_AMT constant. Use the logical OR operator to also check if salesAmt is greater than or equal to the HIGH_SALES constant. If either expression is true, assign the value of the LARGE_QUOTA constant to the variable bonusAmt.

You write pseudocode in everyday language, not the syntax used in a programming language.

In Boolean expressions, when you want to execute more than one statement based on the results of the expression, you place statements within a block. What is a block and why is it important in decision statements? Why are curly braces crucial when blocking an if statement?

Create an if statement that will check if the variable salesAmt is greater than the constant SALES_QUOTA. If true, create a block statement that will calculate salesAmt * BONUS_PERCENT and store the result in a variable named bonusPay. The block statement will then compute totalPay by adding salesAmt to bonusPay. Outside of the if structure, add a println statement that will output the totalPay value.

public class Student { private int studentNum; private int studentScore; public int MAX_NUM = 500; public int MAX_SCORE = 100; Student(int num, int score) { } Decision making can be used to control the allowed values in an object's fields. In the above code, the Student class contains two fields that hold a student number and a score. A constructor accepts values for these fields as parameters. Write the code between the curly brackets that will determine whether the value of num is less than the MAX_NUM constant. If true, assign the value of num to studentNum. Otherwise, assign the value of MAX_NUM to the studentNum. Then check if the value of score is less than or equal to MAX_SCORE. If true, assign the value of score to studentScore. Otherwise, assign 0 to studentScore.

____________________ statements are particularly useful when two conditions must be met before some action is taken.

A logical structure called a(n) ____ structure is when one step follows another unconditionally.

An alternative to using a Boolean expression, such as someVariable == 10, is to store the Boolean expression's value in a Boolean variable.

Failing to include a complete ____ on each side of an && operator in an if statement is a common error in Java programming.

The ____ statement is useful when you need to test a single variable against a series of exact integer, character, or string values.

The ____ operator is always evaluated before the OR operator.

The ____ operator is written as the exclamation point ( ! ).

You can leave out the ____ statements in a switch structure.

You are never required to use a switch structure; you can always achieve the same results with nested ____________________ statements.

Describe how a sequence structure works.

Create a switch statement that will test the value of a variable named score. If score has a value of 5, create a println statement that will output "Excellent". If score has a value of 4, create a println statement that will output "Great". If score has a value of 3, create a println statement that will output "Good". If score has a value of 2, create a println statement that will output "Fair". If score has a value of 1, create a println statement that will output "Needs improvement". If score does not contain a matching value for any of the case statements, create a println statement that will output "Retake test".

Why would a programmer execute more than one statement that depends on the evaluation of a Boolean expression, and how could he or she do it in Java?

Computers contain switches that are set to on or off.

The ____ requires three expressions separated with a question mark and a colon.