Pearson eText for Starting out with Visual C# -- Instant Access (Pearson+)

5th Edition

ISBN: 9780137502783

Author: Tony Gaddis

Publisher: PEARSON+

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Textbook Question

Chapter 5, Problem 14PP

Random Number File Reader

This exercise assumes you have completed Programming Problem 13, Random Number File Writer. Create another application that uses an OpenFileDialog control to let the user select the file that was created by the application that you wrote for Problem 13. This application should read the numbers from the file, display the numbers in a ListBox control, and then display the following data:

The total of the numbers
The number of random numbers read from the file

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Chapter 5, Problem 13PP

Chapter 6.2, Problem 6.1CP

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2. Signed Integers Unsigned binary numbers work for natural numbers, but many calculations use negative numbers as well. To deal with this, a number of different methods have been used to represent signed numbers, but we will focus on two's complement, as it is the standard solution for representing signed integers. 2.1 Two's complement • Most significant bit has a negative value, all others are positive. So, the value of an n-digit -2 two's complement number can be written as: Σ2 2¹ di 2n-1 dn • Otherwise exactly the same as unsigned integers. i=0 - • A neat trick for flipping the sign of a two's complement number: flip all the bits (0 becomes 1, or 1 becomes 0) and then add 1 to the least significant bit. • Addition is exactly the same as with an unsigned number. 2.2 Exercises For questions 1-3, answer each one for the case of a two's complement number and an unsigned number, indicating if it cannot be answered with a specific representation. 1. (15 pts) What is the largest integer…

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Chapter 5 Solutions

Pearson eText for Starting out with Visual C# -- Instant Access (Pearson+)

Ch. 5.1 - Prob. 5.1CP Ch. 5.1 - Prob. 5.2CP Ch. 5.1 - Prob. 5.3CP Ch. 5.2 - What is a loop iteration?Ch. 5.2 - What is a counter variable?Ch. 5.2 - What is a pretest loop?Ch. 5.2 - Does the while loop rest its condition before or...Ch. 5.2 - What is an infinite loop?Ch. 5.3 - What messages will the following code sample...Ch. 5.3 - How many rimes will the following loop iterate?...

Ch. 5.4 - Name the three expressions that appear inside the...Ch. 5.4 - You want to write a for loop that displays I love...Ch. 5.4 - What would the following code display? for (int...Ch. 5.4 - What would the following code display? for (int...Ch. 5.5 - What is a posttest loop?Ch. 5.5 - What is the difference between the while loop and...Ch. 5.5 - How many times will the following loop iterate?...Ch. 5.6 - What is an output file?Ch. 5.6 - What is an input file?Ch. 5.6 - What three steps must be taken by a program when...Ch. 5.6 - What is the difference between a text file and a...Ch. 5.6 - Prob. 5.22CP Ch. 5.6 - What type of object do you create if you want to...Ch. 5.6 - What type of object do you create if you want to...Ch. 5.6 - If you call the File.CreateText method and the...Ch. 5.6 - If you call the File.AppendText method and the...Ch. 5.6 - What is the difference between the WriteLine and...Ch. 5.6 - What method do you call to open a text file to...Ch. 5.6 - What is a files read position? Initially, where is...Ch. 5.6 - How do you read a line of text from a text file?Ch. 5.6 - How do you close a file?Ch. 5.6 - Assume inputFile references a StreamReader object...Ch. 5.7 - What is the benefit of using an Open and/or Save...Ch. 5.7 - Prob. 5.34CP Ch. 5.8 - What does a Random objects Next method return?Ch. 5.8 - What does a Random objects NextDouble method...Ch. 5.8 - Write code that creates a Random object and then...Ch. 5.8 - Write code that creates a Random object and then...Ch. 5.8 - Prob. 5.39CP Ch. 5.8 - What happens if the same seed value is used each...Ch. 5.9 - Prob. 5.41CP Ch. 5.9 - Prob. 5.42CP Ch. 5 - ListBox controls have an __________ method that...Ch. 5 - A __________ is commonly used to control the...Ch. 5 - A(n) __________ loop tests its condition before...Ch. 5 - The term __________ is used to describe a file...Ch. 5 - The term __________ file is used to describe a...Ch. 5 - A __________ file contains data that has been...Ch. 5 - When you work with a __________ file you access...Ch. 5 - Prob. 8MC Ch. 5 - A __________ object is an object that is...Ch. 5 - When a program works with an input file, a special...Ch. 5 - When the user selects a file with the Open dialog...Ch. 5 - The __________ control displays a standard Windows...Ch. 5 - Once you have created a Random object, you can...Ch. 5 - Prob. 14MC Ch. 5 - When you run an application, the applications form...Ch. 5 - If the ListBox is empty, the Items.Count property...Ch. 5 - To increment a variable means to increase its...Ch. 5 - When a variable is declared in the initialization...Ch. 5 - The while loop always performs at least one...Ch. 5 - The term read file is used to describe a file that...Ch. 5 - To append data to an existing file, you open it...Ch. 5 - As items are read from the file, the read position...Ch. 5 - The numbers that are generated by the Random class...Ch. 5 - Prob. 10TF Ch. 5 - What is contained in the body of a loop?Ch. 5 - Write a programming statement that uses postfix...Ch. 5 - How many iterations will occur if the test...Ch. 5 - What are filename extensions? What do they...Ch. 5 - When an input file is opened, what is its read...Ch. 5 - How can you read all of the items in a file...Ch. 5 - What is a variable that is used to accumulate a...Ch. 5 - By default, the Open dialog box displays the...Ch. 5 - Prob. 9SA Ch. 5 - Prob. 10SA Ch. 5 - Write a loop that displays your name 10 times.Ch. 5 - Write a loop that displays all the odd numbers...Ch. 5 - Write a loop that displays every fifth number from...Ch. 5 - Write a code sample that uses a loop to write the...Ch. 5 - Assume that a file named People.txt contains a...Ch. 5 - Distance Calculator If you know a vehicles speed...Ch. 5 - Distance File Modify the Distance Calculator...Ch. 5 - Celsius to Fahrenheit Table Assuming that C is a...Ch. 5 - Prob. 4PP Ch. 5 - Pennies for Pay Susan is hired for a job, and her...Ch. 5 - Prob. 6PP Ch. 5 - Prob. 7PP Ch. 5 - Prob. 8PP Ch. 5 - Prob. 9PP Ch. 5 - Addition Tutor Create an application that...Ch. 5 - Random Number Guessing Game Create an application...Ch. 5 - Calculating the Factorial of a Number In...Ch. 5 - Random Number File Writer Create an application...Ch. 5 - Random Number File Reader This exercise assumes...

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