Understanding C# Grammar
Explore the fundamental grammar of C# by creating console applications that demonstrate language syntax, statement structure, and the use of comments and blocks. Understand how to identify and fix syntax errors and learn best practices for writing clear, maintainable code.
To learn simple C# language features, we can use .NET Interactive Notebooks, which remove the need to create an application. We must create an application to learn other C# language features. The simplest type of application is a console app.
Let’s start by looking at the basics of the grammar and vocabulary of C#. Throughout this section, we will create multiple console apps, each showing related features of the C# language.
Showing the compiler version
We will start by writing code that shows the compiler version:
Step 1: Use your preferred code editor to create a new project, as defined in the following list:
- Project template:
Console App [C#]/console - Project file and folder:
Vocabulary - Workspace/solution file and folder:
Chapter02
Step 2: Open the Program.cs file, and under the comment, add a statement to show the C# version as an error, as shown in the following code:
#error version
Step 3: Run the console app:
- If you are using Visual Studio Code, then in a terminal, enter the command
dotnetrun. - If you use Visual Studio 2022, navigate to “Debug | Start