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Chapter 3: Problem 35

What does a break statement do? Where is it legal to put a break statement?

Short Answer

Expert verified
Answer: The function of a break statement in programming is to exit a loop or switch statement prematurely, allowing the execution of code to resume after the loop or switch statement. It can legally be placed within for loops, while loops, do-while loops, and switch statement case blocks to terminate the execution when a certain condition is met.

Step by step solution

01

Definition of the break statement

A break statement is a programming construct that allows the execution of code to exit a loop or switch statement prematurely. It is used in programming languages such as Python, Java, and C++ to simplify code and optimize performance.
02

Function of the break statement

The purpose of a break statement is to bring the control out of the loop or switch statement, and resume the execution of the following code after the loop or switch statement. It is often used in situations where a certain condition is meant to be checked, and if that condition is met, there is no need to continue executing the remaining iterations of the loop.
03

Legitimate locations for break statements

A break statement can legally be placed within a loop or a switch statement. These include: 1. For loops: The break statement can be placed inside a for loop to exit when a certain condition is met. 2. While loops: It can also be positioned within a while loop to terminate execution when required. 3. Do-while loops: Similar to other loops, break statements can also be placed inside do-while loops. 4. Switch statements: Furthermore, break statements can be used in switch statements to exit out of a specific case statement once its code block has executed.

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Most popular questions from this chapter

Write a loop that will write the word Hello to the screen ten times (when embedded in a complete program).

What output will be produced by the following code, when embedded in a complete program? int first_choice \(=1\) switch (first_choice +1 ) \\{ case 1: cout \(<<\) "Roast beef \(\backslash n^{\prime \prime}\) break; case 2: cout \(<<\) "Roast worms \(\backslash \mathrm{n}^{\prime \prime}\) break; case 3: cout \(<<\) "Chocolate ice cream\backslashn"; case 4 cout \(<<\) "Onion ice cream \(\backslash \mathrm{n}^{\prime \prime}\) break; default: cout \(<<\) "Bon appetit! \(\backslash n "\)}

What output will be produced by the following code, when embedded in a complete program? \(\begin{aligned} \text {int extra} &=2 \\ \text {if }(\operatorname{extr} a&<0) \\ \text { cout }<<& \text { "small" } \\ \text { else if }(\text { extra }=& 0 \text { ) } \\ \text { cout }<<& \text { "medium" } \\ \text { e lse } & \text { cout }<<\text { "large"; } \end{aligned}\)

You have a fence that is to be 100 meters long. Your fence posts are to be placed every 10 feet. How many fence posts do you need? Why is the presence of this problem in a programming book not as silly as it might seem? What problem that programmers have does this question address?

Does the following sequence produce division by zero? $$\begin{array}{l} j=-1 ; \\ \text { if }((j>0) \& \&(1 /(j+1)>10)) \\ \quad \text { cout }<<\quad i<<\text { end } 1 ; \end{array}$$
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