C++ How to Program (Early Objects Version)

10th Edition

ISBN: 9780134448824

Author: Paul Deitel; Harvey M. Deitel

Publisher: Pearson Education (US)

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A literal in computer science is used to express a fixed value in source code. They cannot be modified. Almost all programs have these fixed values or literals.

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Textbook Question

Chapter 22, Problem 22.9E

(Unpacking Characters from Unsigned Integers) Using the right-shift operator, the bitwise AND operator and a mask, write function unpackCharacters that takes the unsigned integer from Exercise 22.8 and unpacks it into four characters. To unpack characters from an unsigned four-byte integer, combine the unsigned integer with a mask and right-shih the result. To create the masks, you’ll need to unpack the four characters. left-shift the value 255 in the mask variable by eight bits 0, 1, 2 or 3 times (depending on the byte you are unpacking). Then take the combined result each time and right shift it by eight bits the same number of times. Assign each resulting value to a char variable. The program should print the unsigned integer in bits before it's unpacked, then print the characters in bits to confirm that they were unpacked correctly.

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Chapter 22, Problem 22.8E

Chapter 22, Problem 22.10E

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Chapter 22 Solutions

C++ How to Program (Early Objects Version)

Ch. 22 - Prob. 22.4E Ch. 22 - Prob. 22.5E Ch. 22 - (Shifting and Printing an Integer) Write a program...Ch. 22 - (Multiplication Via Bit Shifting) Left-shifting as...Ch. 22 - (Packing Characters into Unsigned Integers) The...Ch. 22 - (Unpacking Characters from Unsigned Integers)...Ch. 22 - Prob. 22.10E Ch. 22 - Prob. 22.11E Ch. 22 - (Determine the Value) The following program uses...Ch. 22 - Prob. 22.13E

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Solution Summary: The author explains that the program is an extension to the previous program for Packing the characters to unsigned integers.

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Chapter 22 Solutions