Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
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Expert Solution & Answer
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Chapter 4, Problem 1MC
Program Description Answer

The println statement in the given program segment displays the value “5”.

Hence, the correct answer is option “A”.

Expert Solution & Answer
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Explanation of Solution

Increment operator “++”:

The increment operator is used to increment or increase the value of the variable by “1”.

Example:

/*the variable val is increased by 1 with a postfix representation */

val++;

/*the variable val is increased by 1 with a prefix representation */

++val;

In the given program segment, the variable “x” is declared and initialized with the value “5”. In the println statement, post-increment operation is performed using the statement “x++”. As per postfix mode, the value of the variable “x” is printed and then the value is incremented. Therefore, the value of “x”, which is “5” is printed using the println statement and then the value of “x” is incremented.

Explanation for incorrect options:

b. 6:

The value of “x” is incremented to 6 after it is displayed.

Hence, the option “B” is wrong.

c. 0:

The value of “x” is initialized as 5, and then it is not modified as “0”.

Hence, the option “C” is wrong.

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Chapter 4 Solutions

Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)

Chapter 4.5, Problem 4.11CPChapter 4.5, Problem 4.12CPChapter 4.6, Problem 4.13CPChapter 4.6, Problem 4.14CPChapter 4.6, Problem 4.15CPChapter 4.10, Problem 4.16CPChapter 4.10, Problem 4.17CPChapter 4.10, Problem 4.18CPChapter 4.10, Problem 4.19CPChapter 4.10, Problem 4.20CPChapter 4.10, Problem 4.21CPChapter 4.10, Problem 4.22CPChapter 4.10, Problem 4.23CPChapter 4.11, Problem 4.24CPChapter 4.11, Problem 4.25CPChapter 4.11, Problem 4.26CPChapter 4.11, Problem 4.27CPChapter 4, Problem 1MCChapter 4, Problem 2MCChapter 4, Problem 3MCChapter 4, Problem 4MCChapter 4, Problem 5MCChapter 4, Problem 6MCChapter 4, Problem 7MCChapter 4, Problem 8MCChapter 4, Problem 9MCChapter 4, Problem 10MCChapter 4, Problem 11MCChapter 4, Problem 12MCChapter 4, Problem 13MCChapter 4, Problem 14MCChapter 4, Problem 15MCChapter 4, Problem 16MCChapter 4, Problem 17MCChapter 4, Problem 18MCChapter 4, Problem 19TFChapter 4, Problem 20TFChapter 4, Problem 21TFChapter 4, Problem 22TFChapter 4, Problem 23TFChapter 4, Problem 24TFChapter 4, Problem 25TFChapter 4, Problem 26TFChapter 4, Problem 1FTEChapter 4, Problem 2FTEChapter 4, Problem 3FTEChapter 4, Problem 4FTEChapter 4, Problem 1AWChapter 4, Problem 2AWChapter 4, Problem 3AWChapter 4, Problem 4AWChapter 4, Problem 5AWChapter 4, Problem 6AWChapter 4, Problem 7AWChapter 4, Problem 8AWChapter 4, Problem 9AWChapter 4, Problem 10AWChapter 4, Problem 11AWChapter 4, Problem 12AWChapter 4, Problem 13AWChapter 4, Problem 14AWChapter 4, Problem 15AWChapter 4, Problem 16AWChapter 4, Problem 17AWChapter 4, Problem 18AWChapter 4, Problem 19AWChapter 4, Problem 20AWChapter 4, Problem 1SAChapter 4, Problem 2SAChapter 4, Problem 3SAChapter 4, Problem 4SAChapter 4, Problem 5SAChapter 4, Problem 6SAChapter 4, Problem 7SAChapter 4, Problem 8SAChapter 4, Problem 9SAChapter 4, Problem 10SAChapter 4, Problem 11SAChapter 4, Problem 12SAChapter 4, Problem 13SAChapter 4, Problem 14SAChapter 4, Problem 15SAChapter 4, Problem 16SAChapter 4, Problem 17SAChapter 4, Problem 18SAChapter 4, Problem 19SAChapter 4, Problem 20SAChapter 4, Problem 21SAChapter 4, Problem 22SAChapter 4, Problem 23SAChapter 4, Problem 1PCChapter 4, Problem 2PCChapter 4, Problem 3PCChapter 4, Problem 4PCChapter 4, Problem 5PCChapter 4, Problem 6PCChapter 4, Problem 7PCChapter 4, Problem 8PCChapter 4, Problem 9PCChapter 4, Problem 10PCChapter 4, Problem 11PCChapter 4, Problem 12PCChapter 4, Problem 13PCChapter 4, Problem 14PCChapter 4, Problem 15PCChapter 4, Problem 16PCChapter 4, Problem 17PCChapter 4, Problem 18PCChapter 4, Problem 19PCChapter 4, Problem 20PCChapter 4, Problem 21PCChapter 4, Problem 22PCChapter 4, Problem 23PC
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