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Select the best answer about the following code fragments (a) and (b): (a) if (age System.out.println ("no beer for you"); if (age System.out.println ("BEER!"); 21) く 21) (b) if (age < 21) System.out.println ("no beer for you"); else System.out.println ("BEER");

Select the best answer about the following code fragments (a) and (b): (a) if (age System.out.println ("no beer for you"); if (age System.out.println ("BEER!"); 21) く 21) (b) if (age < 21) System.out.println ("no beer for you"); else System.out.println ("BEER");

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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**Title: Understanding Conditional Statements in Code Fragments** **Introduction:** This section tests your ability to analyze and compare two different code fragments that implement conditional statements. These snippets are designed to print messages based on the value of the variable `age`. **Code Fragment (a)** ``` if (age < 21) System.out.println("no beer for you"); if (age >= 21) System.out.println("BEER!"); ``` _Description:_ Fragment (a) uses two separate `if` statements to print a message depending on whether the age is less than 21 or 21 and over. Each condition is evaluated independently. **Code Fragment (b)** ``` if (age < 21) System.out.println("no beer for you"); else System.out.println("BEER!"); ``` _Description:_ Fragment (b) improves upon the logic by using an `if-else` structure. If the age is less than 21, it prints "no beer for you". Otherwise, it defaults to printing "BEER!". This structure provides a clear alternative path if the initial condition is false. **Multiple-Choice Question:** Identify the best statement regarding code fragments (a) and (b): - ○ (a) is correct, (b) is incorrect because it is missing (age >= 21) after else - ○ (a) is incorrect, (b) is correct - ○ both (a) and (b) are correct, but (b) is better - ○ both (a) and (b) are correct, but (a) is better **Discussion:** The optimal choice evaluates which fragment is logically sound and more efficient. Consideration is given to code simplicity, readability, and coverage of all scenarios in a clean manner.
Transcribed Image Text:**Title: Understanding Conditional Statements in Code Fragments** **Introduction:** This section tests your ability to analyze and compare two different code fragments that implement conditional statements. These snippets are designed to print messages based on the value of the variable `age`. **Code Fragment (a)** ``` if (age < 21) System.out.println("no beer for you"); if (age >= 21) System.out.println("BEER!"); ``` _Description:_ Fragment (a) uses two separate `if` statements to print a message depending on whether the age is less than 21 or 21 and over. Each condition is evaluated independently. **Code Fragment (b)** ``` if (age < 21) System.out.println("no beer for you"); else System.out.println("BEER!"); ``` _Description:_ Fragment (b) improves upon the logic by using an `if-else` structure. If the age is less than 21, it prints "no beer for you". Otherwise, it defaults to printing "BEER!". This structure provides a clear alternative path if the initial condition is false. **Multiple-Choice Question:** Identify the best statement regarding code fragments (a) and (b): - ○ (a) is correct, (b) is incorrect because it is missing (age >= 21) after else - ○ (a) is incorrect, (b) is correct - ○ both (a) and (b) are correct, but (b) is better - ○ both (a) and (b) are correct, but (a) is better **Discussion:** The optimal choice evaluates which fragment is logically sound and more efficient. Consideration is given to code simplicity, readability, and coverage of all scenarios in a clean manner.
Expert Solution
Explanation

I run both the code in java, because from analaysing the code its written in java you can see i got output from both the question a and b,

Computer Science homework question answer, step 1, image 1Computer Science homework question answer, step 1, image 2

from above example and output we can say that both the conditions are true, now question is which one is better obviously we want to make our code more simple and readable so option b is better option because here we dont need to write the condition, else part is giving us exatly same output as second if in option a.

 

 

 

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