EBK STARTING OUT WITH C++
8th Edition
ISBN: 8220100794438
Author: GADDIS
Publisher: PEARSON
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Chapter 4.9, Problem 4.18CP
Program Plan Intro
Logic operators:
Logical operators are used perform the logical operations between two variables. Logical operator are used to connect two relational expressions into one or used to reverse the logic of the expression.
- The logic operators are AND “&&”, OR “||”, NOT “!”:
- Logical operator AND “&&” is used to determine whether the range is inside the specified numeric range.
- Logical operator OR “||” is used to determine whether the range is outside the specified numeric range.
- The logical operator NOT “!” is used to reverse the operands, if the returned value is true it is converted to false and vice versa.
AND “&&” operator:
It is used in connecting two conditional expressions, which can be represented as single expression. It works when both conditions are evaluated as “true”. When both conditions are evaluated to “true”, then the complete expression is evaluated as “true”.
Truth table of AND “&&” operator:
| Expression 1 | Expression 2 | Value of complete expression |
| True(1) | True(1) | True(1) |
| True(1) | False(0) | False(0) |
| False(0) | True(1) | False(0) |
| False(0) | False(0) | False(0) |
OR “||”operator:
It is used in connecting two conditional expressions, which can be represented as single expression. It works when one conditions is evaluated to “true”. When one condition is evaluated to “true”, then the complete expression is evaluated as “true”.
Truth table of “||” operator:
| Expression 1 | Expression 2 | Value of complete expression |
| True(1) | True(1) | True(1) |
| True(1) | False(0) | True(1) |
| False(0) | True(1) | True(1) |
| False(0) | False(0) | False(0) |
NOT “!” operator:
The logical operator “!” is used to reverse the operands truth or false hood. When the given expression is “true” it will negate the given expression to “false” or vice versa.
Truth table of “!” operator:
| Given expression | Output expression |
| !True(1) | False(0) |
| !False(0) | True(1) |
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Chapter 4 Solutions
EBK STARTING OUT WITH C++
Ch. 4.1 - Prob. 4.1CPCh. 4.1 - Indicate whether the following statements about...Ch. 4.1 - Prob. 4.3CPCh. 4.1 - Prob. 4.4CPCh. 4.2 - Write an if statement that performs the following...Ch. 4.2 - Write an if statement that performs the following...Ch. 4.2 - Write an if statement that multiplies payRate by...Ch. 4.2 - True or False: Both of the following i f...Ch. 4.2 - True or false: Both of the following if statements...Ch. 4.3 - Write an if statement that performs the following...
Ch. 4.3 - The following code segment is syntactically...Ch. 4.4 - True or false: The following if/else statements...Ch. 4.4 - Write an if/else statement that assigns 1 to x if...Ch. 4.4 - Write an if/else statement that assigns 0.10 to...Ch. 4.5 - If you executed the following code, what would it...Ch. 4.6 - What will the following code display? int funny =...Ch. 4.6 - The following code is used in a bookstore program...Ch. 4.9 - Prob. 4.18CPCh. 4.9 - Assume the variables a = 2, b = 4, and c = 6....Ch. 4.9 - Write an if statement that prints the message The...Ch. 4.9 - Write an if statement that prints the message The...Ch. 4.12 - Prob. 4.22CPCh. 4.12 - Indicate whether each of the following relational...Ch. 4.13 - Rewrite the following if/else statements as...Ch. 4.13 - The following statements use conditional...Ch. 4.13 - Prob. 4.26CPCh. 4.14 - Explain why you cannot convert the following if...Ch. 4.14 - What is wrong with the following switch statement?...Ch. 4.14 - What will the following program display? #include...Ch. 4.14 - Complete the following program skeleton by writing...Ch. 4.14 - Rewrite the following program. 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Find as...Ch. 4 - // This program divides a user-supplied number by...Ch. 4 - // This program uses an if/else if statement to...Ch. 4 - // This program uses a switch-case statement to...Ch. 4 - The following statement should determine if x is...Ch. 4 - The following statement should determine if count...Ch. 4 - The following statement should determine if count...Ch. 4 - The following statement should assign 0 to z if a...Ch. 4 - Minimum/Maximum Write a program that asks the user...Ch. 4 - Roman Numeral Converter Write a program that asks...Ch. 4 - Magic Dates The date June 10, 1960 is special...Ch. 4 - Areas of Rectangles The area of a rectangle is the...Ch. 4 - Body Mass Index Write a program that calculates...Ch. 4 - Mass and Weight Scientists measure an objects mass...Ch. 4 - Time Calculator Write a program that asks the user...Ch. 4 - Color Mixer The colors red, blue, and yellow are...Ch. 4 - Change for a Dollar Game Create a change-counting...Ch. 4 - Days in a Month Write a program that asks the user...Ch. 4 - Math Tutor This is a modification of Programming...Ch. 4 - Software Sales A software company sells a package...Ch. 4 - Book Club Points Serendipity Booksellers has a...Ch. 4 - Bank Charges A bank charges 10 per month plus the...Ch. 4 - Shipping Charges The Fast Freight Shipping Company...Ch. 4 - Running the Race Write a program that asks for the...Ch. 4 - Personal Best Write a program that asks for the...Ch. 4 - Fat Gram Calculator Write a program that asks for...Ch. 4 - Spectral Analysis If a scientist knows the...Ch. 4 - Prob. 20PCCh. 4 - The Speed of Sound in Gases When sound travels...Ch. 4 - Freezing and Boiling Points The following table...Ch. 4 - Prob. 23PCCh. 4 - Long-Distance Calls A long-distance carrier...Ch. 4 - 25. 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A mobile phone service...Ch. 4 - 26. Mobile Service Provider, Part 2
Modify the...Ch. 4 - Prob. 27PC
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