Chapter 5: Problem 30

The _____________ loop is ideal for situations that require a counter.

Short Answer

Expert verified

Short Answer: A "for" loop is beneficial when needing a counter. It consists of four main parts: Initialization, Condition, Iteration, and Loop Body. For example, the following code prints the numbers from 1 to 10 using a "for" loop: ```python for i in range(1, 11): print(i) ```

Step by step solution

1. Understanding the loop type

The type of loop that is ideal for situations that require a counter is called a "for" loop.

2. Explain the structure of a for loop

A "for" loop consists of four main parts: Initialization, Condition, Iteration, and Loop Body. The Initialization section sets the initial state of the loop's counter variable. The Condition section tests whether the current value of the counter variable satisfies a certain condition. If the Condition evaluates to true, the loop continues; otherwise, it exits. The Iteration section updates the counter variable after each pass through the loop. Finally, the Loop Body contains the code that executes during each loop iteration.

3. Provide an example

Consider a situation where we want to print the numbers from 1 to 10 using a "for" loop. Here's a step-by-step breakdown of the code: ```python for i in range(1, 11): # Initialization, Condition, and Iteration print(i) # Loop Body ```

4. Explain the example

In this example, the Initialization of the "for" loop sets the counter variable "i" to 1, at the beginning of the loop. The Condition is implicitly defined by the "range" function which checks if "i" is within the range of 1 to 11 (not including 11). The Iteration update is to increment "i" by 1 during each pass through the loop (also handled by the "range" function). The Loop Body contains a single line of code, "print(i)" which prints the current value of "i" during each iteration. Therefore, this loop will print the numbers from 1 to 10.

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The _____________ loop is ideal for situations that require a counter.

Short Answer

Step by step solution

1. Understanding the loop type

2. Explain the structure of a for loop

3. Provide an example

4. Explain the example

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