Evaluating Expressions that Contain if Statements

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• Learn: if Statements

Evaluating Expressions

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	Evaluate each expression. Verify your answer by running the code in the Java Playground.

Practice 1: Shopping Cart Discount

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for totalPurchase and corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 2: Bank Account Withdrawal

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for balance and withdrawal as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 3: Temperature Check

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for temperature as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 4: Library Membership Verification

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for hasLibraryCard and hasPhotoID as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 5: Library Membership Verification

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for age and parentalConsent as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 6: Vacation Approval

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for isManager and daysAvailable as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 7: Contest Participation

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for age and hasParentPermission as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 8: Multi-level Discount Application

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for totalPurchase and isMember as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 9: Exam Result Status

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for score and attendedExam as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Practice 10: Delivery Zone and Availability Check

• Predict the output of the expression.
• Verify your prediction is correct by running the code in the Java Playground.
• Identify possible values for city and slotsAvailable as well as the corresponding outputs that can be used to test the code is working as expected.
• Modify the code to use these test values.
• Verify the corresponding outputs by running the code in the Java Playground.

Resources

• Practice: Writing Expressions that contain if statements