Basic Program

In this tutorial, we’ll go through the process of writing, understanding, and running a simple Dart program that prints “Hello, World!” to the console.

Prerequisites

• Ensure Dart is installed on your system. You can verify this by running dart --version in your terminal or command prompt.

Creating Your First Dart Program

Step 1: Set Up Your Project

1. Create a New Directory:

   • Create a new folder for your Dart project. You can name it anything, for example, hello_dart.
   • Navigate into your new directory:

     mkdir hello_dart
     cd hello_dart

2. Create a Dart File:

   • Inside the directory, create a new file named main.dart.
   • You can do this using a text editor, or by running the following command in the terminal:

     touch main.dart

Step 2: Write the Dart Code

1. Open main.dart in Your Text Editor:
   • Add the following Dart code to the file:

     void main() {
       print('Hello, World!');
     }

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• This program starts with a main function, which is the entry point of many programming languages, including Dart.
• The print() function is used to output text to the console.

Step 3: Run Your Dart Program

1. Execute the Program:

   • Open your terminal or command prompt.
   • Navigate to the directory containing your main.dart file.
   • Run the program by typing:

     dart run main.dart

2. View the Output:

   • If everything is set up correctly, you will see Hello, World! printed in the terminal.

Understanding the Code

• void main(): This declares the main function. void indicates that this function does not return a value.
• print('Hello, World!'): This line outputs the string Hello, World! to the console.

Next Steps

After running your first program, you might want to explore more about Dart:

• Variables and Types: Learn about declaring and using variables in Dart.
• Control Structures: Explore how to use if statements, loops, and other control structures.
• Functions: Understand how to define and invoke functions.
• Classes and Objects: Dive into object-oriented programming with Dart.

Explore these topics by visiting the official Dart documentation.