7. Long-Distance CallsA long-distance provider charges the following rates for telephone calls: Rate Category Rate per MinuteDaytime (6:00 a.m. through 5:59 p.m.) 0ドル.07Evening (6:00 p.m. through 11:59 p.m.) 0ドル.12Off-Peak (midnight through 5:59 a.m.) 0ドル.05Write a GUI application that allows the user to select a rate category (from a set of radio buttons), and enter the number of minutes of the call into an Entry widget. An info dialog box should display the charge for the call.

Name and Address The Name and Address Problem Write a GUI program that displays your name and address when a button is clicked. The program’s window should appear as the sketch on the left side of Figure 13-61 when it runs. When the user clicks the Show Info button, the program should display your name and address, as shown in the sketch on the right of the figure.

Exercise 1 Function and Structure [30 pts] Please debug the following program and answer the following questions. There is a cycle in a linked list if some node in the list can be reached again by continuously following the next pointer. #include typedef struct node { int value; struct node *next; } node; int 11_has_cycle (node *first) if (first == node *head = { NULL) return 0; first; while (head->next != NULL) { } if (head first) { return 1; } head = head->next; return 0; void test ll_has_cycle () { int i; node nodes [6]; for (i = 0; i < 6; i++) { nodes [i] .next = NULL; nodes [i].value = i; } nodes [0] .next = &nodes [1]; nodes [1] .next = &nodes [2]; nodes [2] .next = &nodes [3]; nodes [3] .next nodes [4] .next &nodes [4]; NULL; nodes [5] .next = &nodes [0]; printf("1. Checking first list for cycles. \n Function 11_has_cycle says it has s cycle\n\n", 11_has_cycle (&nodes [0])?"a":"no"); printf("2. Checking length-zero list for cycles. \n Function 11_has_cycle says it has %s...

Chapter 6 Solutions

Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)

Ch. 6.1 - What does an object use its fields for? Ch. 6.1 - Prob. 6.2CP Ch. 6.1 - How is a class like a blueprint? Ch. 6.1 - You have programs that create Scanner, Random, and... Ch. 6.1 - Prob. 6.5CP Ch. 6.1 - What values do reference variables hold? Ch. 6.1 - Prob. 6.7CP Ch. 6.2 - You hear someone make the following comment: A... Ch. 6.2 - Prob. 6.9CP Ch. 6.2 - When a variable is said to reference an object,...

Ch. 6.2 - Prob. 6.11CP Ch. 6.2 - Prob. 6.12CP Ch. 6.2 - Prob. 6.13CP Ch. 6.2 - Prob. 6.14CP Ch. 6.2 - Prob. 6.15CP Ch. 6.2 - What is a stale data item? Ch. 6.3 - Assume that r1 and r2 are variables that reference... Ch. 6.4 - How is a constructor named? Ch. 6.4 - What is a constructors return type? Ch. 6.4 - Prob. 6.20CP Ch. 6.7 - Prob. 6.21CP Ch. 6.7 - What is a methods signature? Ch. 6.7 - Look at the following class: public class... Ch. 6.7 - How many default constructors may a class have? Ch. 6.9 - Prob. 6.25CP Ch. 6.9 - When designing an object-oriented application, who... Ch. 6.9 - How do you identify the potential classes in a... Ch. 6.9 - What are a classs responsibilities? Ch. 6.9 - What two questions should you ask to determine a... Ch. 6.9 - Will all of a classs actions always be directly... Ch. 6 - This is a collection of programming statements... Ch. 6 - A class is analogous to a(n) _______. a. house b.... Ch. 6 - An object is a(n) ________. a. blueprint b.... Ch. 6 - This is a class member that holds data. a. method... Ch. 6 - This key word causes an object to be created in... Ch. 6 - This is a method that gets a value from a classs... Ch. 6 - This is a method that stores a value in a field or... Ch. 6 - When the value of an item is dependent on other... Ch. 6 - This is a method that is automatically called when... Ch. 6 - When a local variable has the same name as a... Ch. 6 - This is automatically provided for a class if you... Ch. 6 - Prob. 12MC Ch. 6 - Prob. 13MC Ch. 6 - A classs responsibilities are __________. a. the... Ch. 6 - True or False: The new operator creates an... Ch. 6 - True or False: Each instance of a class has its... Ch. 6 - True or False: When you write a constructor for a... Ch. 6 - True or False: A class may not have more than one... Ch. 6 - True or False: To find the classes needed for an... Ch. 6 - Find the error in the following class: public... Ch. 6 - Prob. 2FTE Ch. 6 - The following statement attempts to create a... Ch. 6 - Find the error in the following class: public... Ch. 6 - Find the error in the following class: public... Ch. 6 - Design a class named Pet, which should have the... Ch. 6 - Look at the following partial class definition,... Ch. 6 - Consider the following class declaration: public... Ch. 6 - Look at the following description of a problem... Ch. 6 - The bank offers the following types of accounts to... Ch. 6 - Assume that you are writing an application that... Ch. 6 - What is the difference between a class and an... Ch. 6 - A contractor uses a blueprint to build a set of... Ch. 6 - What is an accessor method? What is a mutator... Ch. 6 - is it a good idea to make fields private? Why or... Ch. 6 - If a class has a private field, what has access to... Ch. 6 - Prob. 6SA Ch. 6 - Assume a program named MailList.java is stored in... Ch. 6 - Why are constructors useful for performing... Ch. 6 - Under what circumstances does Java automatically... Ch. 6 - What do you call a constructor that accepts no... Ch. 6 - Prob. 11SA Ch. 6 - How does method overloading improve the usefulness... Ch. 6 - Employee Class Write a class named Employee that... Ch. 6 - Car Class Write a class named Car that has the... Ch. 6 - Personal Information Class Design a class that... Ch. 6 - Retail Item Class Write a class named RetailItem... Ch. 6 - Payroll Class Design a Payroll class that has... Ch. 6 - TestScores Class Design a TestScores class that... Ch. 6 - Circle Class Write a Circle class that has the... Ch. 6 - Temperature Class Write a Temperature class that... Ch. 6 - Days in a Month Write a class named MonthDays, The... Ch. 6 - A Game of Twenty-One For this assignment, you will... Ch. 6 - Freezing and Boiling Points The following table... Ch. 6 - SavingsAccount Class Design a SavingsAccount class... Ch. 6 - Deposit and Withdrawal Files Use Notepad or... Ch. 6 - Patient Charges Write a class named Patient that... Ch. 6 - Dice Game Write a program that uses the Die class... Ch. 6 - Roulette Wheel Colors On a roulette wheel, the... Ch. 6 - Coin Toss Simulator Write a class named Coin. The... Ch. 6 - Tossing Coins for a Dollar For this assignment you... Ch. 6 - Fishing Game Simulation For this assignment, you...

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