Creating Flowcharts on Raptor | Basics of Python - Software Development PDF Download

Introduction

RAPTOR (Rapid Algorithmic Prototyping Tool for Ordered Reasoning) is a flowchart-based programming tool designed for beginners. This guide explains different functions in RAPTOR and how to use them effectively.

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Understanding the RAPTOR Interface

When you launch RAPTOR, you will see:

• Menu Bar – Contains options like File, Edit, and Run.
• Toolbar – Provides quick access to common actions like Open, Save, and Run.
• Workspace – The main area where you create flowcharts.
• Master Console – Displays program output and debugging information.

Flowchart Symbols and Their Functions

RAPTOR uses flowchart symbols to represent different programming functions:

1. Start/End Symbol

• Represents the beginning or end of a program. 
• Every flowchart must start with a Start symbol and end with an End symbol.

2. Input/Output Symbol

• Used for user interaction.
• Input allows users to enter data.
• Output displays results. 
  Example: Displaying a welcome message
  Output: “Welcome to RAPTOR!”

3. Assignment Symbol

• Used to assign values to variables.
• Example: x ← 10 assigns 10 to variable x.

4. Decision Symbol

• Used for conditional statements.
• Example: If x > 0, print “Positive number.”

5. Loop Symbol

• Represents loops (e.g., while, for loops).
• Example: Repeat a message 5 times.

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Creating and Running a Simple RAPTOR Program

Let’s create a simple RAPTOR program that asks for a number and checks if it is even or odd.

Steps:

• Open RAPTOR and start a new flowchart.
• Add an Input Symbol to take a number from the user.
• Use an Assignment Symbol to store the value.
• Add a Decision Symbol to check if the number is even.
• Use Output Symbols to display the result.
• Run the program and test different numbers.