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Chapter 5: Problem 15

The ______ loop always iterates at least once.

Short Answer

Expert verified
Answer: The do-while loop is guaranteed to iterate at least once.

Step by step solution

01

Identifying types of loops

There are three common types of loops in most programming languages: 1. For loop 2. While loop 3. Do-while loop
02

Analyzing the For loop

The for loop is used for iterating over a sequence (that is either a list, tuple, dictionary, set, or string) with a predetermined number of iterations. Here is an example of a for loop structure: ``` for i in range(n): // Code to be executed ``` This loop will iterate n times. If n is 0 or negative, the loop will not execute at all.
03

Analyzing the While loop

The while loop in the programming language allows the code inside the loop to be executed repeatedly as long as the given condition is `True`. Here is an example of a while loop structure: ``` while condition: // Code to be executed ``` This loop will only execute as long as the given condition is satisfied. If the condition is `False` initially, the loop will not execute any iterations.
04

Analyzing the Do-While loop

The do-while loop is a variation of the while loop, which tests the condition after executing the statements. Here is an example of a do-while loop structure: ``` do { // Code to be executed } while (condition); ``` This loop is guaranteed to execute at least once because the code inside the loop runs before the condition is tested.
05

Answer

The loop that always iterates at least once is the do-while loop.

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Most popular questions from this chapter

What will each of the following program segments display? $$\begin{array}{c} \operatorname{int} \mathrm{x}=1 ; \\ \text { while }(\mathrm{x} < 10) \\ \mathrm{x}++ \\ \text { cout } < < \mathrm{x}; \end{array}$$

Write a nested loop that displays 10 rows of ' \(a^{\prime}\) characters. There should be \(15^{\circ} e^{\prime}\) characters in each row.

When the increment or decrement operator is placed after the operand (or to the operand's right), the operator is being used in ______ mode.

Write a for loop that displays the following set of numbers: \(0,10,20,30,40,50, \ldots, 1000\)

A(n) _______ is a special value that marks the end of a series of values.
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