EBK STARTING OUT WITH VISUAL C#
5th Edition
ISBN: 9780135204818
Author: GADDIS
Publisher: VST
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Chapter 6, Problem 8PP
Prime Numbers
A prime number is a number that can be evenly divided by only itself and 1. For example, the number 5 is prime because it can be evenly divided by only 1 and 5. The number 6, however, is not prime because it can be evenly divided by 1, 2, 3, and 6. Write a Boolean method named IsPrime that takes an integer as an argument and returns true if the argument is a prime number or false otherwise. Use the method in an application that lets the user enter a number and then displays a message indicating whether the number is prime.
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Part 1:
In your program, write a method that accepts a positive integer and returns true if the number is a prime number and false otherwise. Note that 2 is the only even prime number. An odd integer is prime if it not divisible by any odd integer less than or equal to the square root of the number.
Part2:
A prime number whose reversal is also a prime number is called emirp. For example, 11, 13, 79 and 359 are emirps. Write a program that outputs to a ListBox the first 100 emirps. Your program must contain the method from Part 1 that returns true if a number is prime; false otherwise and another method that returns the reversal of a positive number. You can reverse the integer in the following way:
• Convert the integer into a string
value = num.ToString();
• Use the following code to reverse the integer
string newNum = “”;
for (int l = value.Length; l > 0; l--)
newNum = newNum + value[l-1];
Also, your program should have a TextBox that will accept a positive integer from the…
The area of a pentagon can be computed usingthe following formula:
Write a method that returns the area of a pentagon using the following header:public static double area(double side)Write a main method that prompts the user to enter the side of a pentagon anddisplays its area. Here is a sample run:Enter the side: 5.5 ↵EnterThe area of the pentagon is 52.04444136781625
Chapter 6 Solutions
EBK STARTING OUT WITH VISUAL C#
Ch. 6.2 - What is the difference between a void method and a...Ch. 6.2 - Prob. 6.2CPCh. 6.2 - Prob. 6.3CPCh. 6.2 - Prob. 6.4CPCh. 6.2 - Prob. 6.5CPCh. 6.3 - Prob. 6.6CPCh. 6.3 - Briefly summarize how assignment compatibility...Ch. 6.3 - Prob. 6.8CPCh. 6.3 - What is a named argument?Ch. 6.3 - Prob. 6.10CP
Ch. 6.4 - Prob. 6.11CPCh. 6.4 - Prob. 6.12CPCh. 6.4 - Prob. 6.13CPCh. 6.4 - Prob. 6.14CPCh. 6.5 - What is a value-returning method? How is it used?Ch. 6.5 - Prob. 6.16CPCh. 6.5 - Can a method be written to return any type of...Ch. 6 - In general terms, a program that is broken into...Ch. 6 - Prob. 2MCCh. 6 - When you call a(n) __________, it simply executes...Ch. 6 - Prob. 4MCCh. 6 - Prob. 5MCCh. 6 - The __________ is the memory address that is saved...Ch. 6 - Programmers commonly use a technique known as...Ch. 6 - Prob. 8MCCh. 6 - Prob. 9MCCh. 6 - A __________ specifies which parameter an argument...Ch. 6 - When a(n)__________ is provided for a parameter,...Ch. 6 - When an argument is __________, only a copy of the...Ch. 6 - Prob. 13MCCh. 6 - Prob. 14MCCh. 6 - Prob. 15MCCh. 6 - Prob. 16MCCh. 6 - Dividing a large problem into several smaller...Ch. 6 - In a Pascal case name, the first character is...Ch. 6 - Prob. 3TFCh. 6 - The contents of variables and the values of...Ch. 6 - You do not have to write the data type for each...Ch. 6 - An output parameter works like a by value...Ch. 6 - Prob. 7TFCh. 6 - A Boolean method returns either yes or no.Ch. 6 - Prob. 1SACh. 6 - Prob. 2SACh. 6 - What is another name for the top-down design...Ch. 6 - Prob. 4SACh. 6 - How do you specify a named argument?Ch. 6 - Prob. 6SACh. 6 - How is a value-returning method like a void...Ch. 6 - Can Boolean methods be used to modularize input...Ch. 6 - Examine the following method header; then write an...Ch. 6 - The following statement calls a method named...Ch. 6 - Write the method header for a method named...Ch. 6 - Examine the following method header; then write an...Ch. 6 - A program contains the following value-returning...Ch. 6 - Retail Price Calculator Create an application that...Ch. 6 - Falling Distance When an object is falling because...Ch. 6 - Kinetic Energy In physics, an object that is in...Ch. 6 - Calories from Fat and Carbohydrates A nutritionist...Ch. 6 - Joes Automotive Joes Automotive performs the...Ch. 6 - Hospital Charges Create an application that...Ch. 6 - Present Value Suppose you want to deposit a...Ch. 6 - Prime Numbers A prime number is a number that can...Ch. 6 - Prime Number List This exercise assumes you have...Ch. 6 - Rock, Paper, Scissors Game Create an application...
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