Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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Chapter 2.3, Problem 2.3.1CP

How do you write a statement to let the user enter a double value from the keyboard? What happens if you entered 5a when executing the following code?

double radius = input.nextDouble();

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Can you declare a variable as int and later redeclare it as double?
What will happen if you execute the given code snippet ?
You are required to write a code that requests the user to enter three integer coefficients: a, b, and c in this order. Next, the user is requested to enter the equation degree: 1 for a linear equation and 2 for a quadratic equation. If the user enters an equation degree other than 1 or 2, the program must output Invalid. Based on the equation type, the program will process the coefficients and provide outputs as described below: First Scenario: Linear Equation When a linear equation is selected, the coefficient a is ignored and the equation format becomes: y=bx+c The program should check the slope of the line and accordingly print the values of the x-intercept, the y-intercept, and the line direction with respect to the x-axis each on a separate line. We have four possibilities: Slope is positive (i.e. b > 0): x-intercept = −cb, y-intercept = c, direction is UpwardSlope is negative (i.e. b < 0): x-intercept = −cb, y-intercept = c, direction is DownwardSlope is zero (i.e. b = 0)…

Chapter 2 Solutions

Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)

Ch. 2.9 - Prob. 2.9.2CPCh. 2.9 - Prob. 2.9.3CPCh. 2.9 - Prob. 2.9.4CPCh. 2.9 - Prob. 2.9.5CPCh. 2.9 - Prob. 2.9.6CPCh. 2.9 - Write a statement to display the result of 23.5.Ch. 2.9 - Suppose m and r are integers. Write a Java...Ch. 2.10 - How many accurate digits are stored in a f1oat or...Ch. 2.10 - Prob. 2.10.2CPCh. 2.10 - Prob. 2.10.3CPCh. 2.10 - Which of the following are correct literals?...Ch. 2.11 - How would you write the following arithmetic...Ch. 2.12 - Prob. 2.12.1CPCh. 2.13 - Prob. 2.13.1CPCh. 2.14 - Which of these statements are true? a. Any...Ch. 2.14 - Show the output of the following code: int a = 6;...Ch. 2.15 - Prob. 2.15.1CPCh. 2.15 - Prob. 2.15.2CPCh. 2.15 - Show the following output: float f =12.5F; int i =...Ch. 2.15 - If you change (int) (tax 100) / 100.0 to (int)...Ch. 2.15 - Prob. 2.15.5CPCh. 2.15 - Write an expression that rounds up a double value...Ch. 2.16 - How would you write the following arithmetic...Ch. 2.17 - Show the output of Listing 2.10 with the input...Ch. 2.18 - Can you declare a variable as int and later...Ch. 2.18 - Prob. 2.18.2CPCh. 2.18 - Will overflow cause a runtime error?Ch. 2.18 - Prob. 2.18.4CPCh. 2 - (Convert Celsius to Fahrenheit) Write a program...Ch. 2 - (Compute the volume of a cylinder) Write a program...Ch. 2 - (Convert feet into meters) Write a program that...Ch. 2 - (Convert pounds into kilograms) Write a program...Ch. 2 - (Financial application: calculate tips) Write a...Ch. 2 - (Sum the digits in an integer) Write a program...Ch. 2 - (Find the number of years) Write a program that...Ch. 2 - (Current time) Listing 2.7. ShowCurrentTime.java,...Ch. 2 - (Physics: acceleration) Average acceleration is...Ch. 2 - (Science: calculating energy) Write a program that...Ch. 2 - (Population projection) Rewrite Programming...Ch. 2 - (Physics: finding runway length) Given an...Ch. 2 - (Financial application: compound value) Suppose...Ch. 2 - (Health application: computing BMI) Body Mass...Ch. 2 - (Geometry: distance of two points) Write a program...Ch. 2 - (Geometry: area of a hexagon) Write a program that...Ch. 2 - (Science: wind-chill temperature) How cold is it...Ch. 2 - (Print a table) Write a program that displays the...Ch. 2 - (Geometry: area of a triangle) Write a program...Ch. 2 - (Financial application: calculate interest) If you...Ch. 2 - (Financial application: calculate future...Ch. 2 - (Financial application: monetary units) Rewrite...Ch. 2 - (Cost of driving) Write a program that prompts the...

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