Creating a Flowchart to Display Even Numbers Between 20 and 30 and Their Total

To create a flowchart that displays the even numbers between 20 and 30 and their total, follow these steps. This guide will help you understand the components of a flowchart and the detailed breakdown of each step.

Components of the Flowchart

A flowchart is a visual representation of a process. Let's break down the components needed for our specific flowchart:

Start

Shape: Oval Indicates where the flowchart begins.

Initialize Variables

Shape: Rectangle Set up variables for the count of even numbers and their total.

code
total  0
count  0
number  20
/code

Loop

Shape: Diamond Use a loop to check each number from 20 to 30.

Check Evenness

Shape: Diamond Check if the number is even using the condition:

code
number % 2  0
/code

Update Total

Shape: Rectangle If the number is even, add it to the total and increment the count.

End Loop

Shape: Diamond Continue until all numbers have been checked.

Display Results

Shape: Rectangle Show the even numbers and their total.

End

Shape: Oval Indicates where the flowchart ends.

Flowchart Steps

Next, here's a more detailed breakdown of how each step would appear in a flowchart:

Start

Shape: Oval

Initialize Variables

Shape: Rectangle Content:

code
total  0
count  0
number  20
/code

Loop Start

Shape: Diamond Condition:

code
number  30
/code

Arrows: Yes (continue) or No (exit loop)

Check Evenness

Shape: Diamond Condition:

code
number % 2  0
/code

Arrows: Yes (update total) or No (increment number)

Update Total

Shape: Rectangle Content:

code
total  number
count  1
/code

Increment Number

Shape: Rectangle Content:

code
number   1
/code

Loop Start (back to the previous diamond)

Display Results

Shape: Rectangle Here, you can show the even numbers and their total.

End

Shape: Oval

Flowchart Example

Here’s a simple textual representation of the flowchart:

[Start] [Initialize Variables] () number 20 [Loop Start] number 30 --- No --- [End]
Yes number % 2 0 --- No --- [Increment Number] Yes [Update Total] [Increment Number] Loop Start [Display Results] [End]

Summary

You can use flowchart software like Lucidchart or Microsoft Visio to create a visual representation based on the steps outlined above. This will help you clearly illustrate the process of finding even numbers between 20 and 30 and their total.