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In this 5-10 minute introduction to the Visual Studio integrated development environment (IDE), you'll create a simple C# app that runs on the console.
To install and use Visual Studio for the commercial purpose it must buy a license from the Microsoft. For learning (non-commercial) purpose, Microsoft provided a free Visual Studio Community Version. To learn how to run a program in Visual Studio you can refer to this. Using Command-Line: You can also use command line options to run a C#. Open Visual Studio 2017. From the top menu bar, choose File New Project. In the New Project dialog box in the left pane, expand C#, and then choose.NET Core. In the middle pane, choose Console App (.NET Core). Then name the project HelloWorld.
If you haven't already installed Visual Studio, go to the Visual Studio downloads page to install it for free.
If you haven't already installed Visual Studio, go to the Visual Studio downloads page to install it for free.
Create a project
First, you'll create a C# application project. The project type comes with all the template files you'll need, before you've even added anything!
Open Visual Studio 2017.
From the top menu bar, choose File > New > Project.
In the New Project dialog box in the left pane, expand C#, and then choose .NET Core. In the middle pane, choose Console App (.NET Core). Then name the project HelloWorld.
If you don't see the Console App (.NET Core) project template, choose the Open Visual Studio Installer link in the left pane of the New Project dialog box.
The Visual Studio Installer launches. Choose the .NET Core cross-platform development workload, and then choose Modify.
Open Visual Studio 2019.
On the start window, choose Create a new project.
On the Create a new project window, enter or type console in the search box. Next, choose C# from the Language list, and then choose Windows from the Platform list.
After you apply the language and platform filters, choose the Console App (.NET Core) template, and then choose Next.
Note
If you do not see the Console App (.NET Core) template, you can install it from the Create a new project window. In the Not finding what you're looking for? message, choose the Install more tools and features link.
Then, in the Visual Studio Installer, choose the .NET Core cross-platform development workload.
After that, choose the Modify button in the Visual Studio Installer. You might be prompted to save your work; if so, do so. Next, choose Continue to install the workload. Then, return to step 2 in this 'Create a project' procedure.
In the Configure your new project window, type or enter HelloWorld in the Project name box. Then, choose Create.
Visual Studio opens your new project.
Create the application
After you select your C# project template and name your project, Visual Studio creates a simple 'Hello World' application for you.
Visual Studio includes default 'Hello World' code in your project.
(To do so, it calls the WriteLine method to display the literal string 'Hello World!' in the console window.)
If you press F5, you can run the program in Debug mode. However, the console window is visible only for a moment before it closes.
Hello World C# Visual Studio Code Examples
(This behavior happens because the Main method terminates after its single statement executes, and so the application ends.)
Add some code
Let's add some code to pause the application so that the console window doesn't close until you press ENTER.
Add the following code immediately after the call to the WriteLine method:
Verify that it looks like this in the code editor:
Run the application
Choose the HelloWorld button on the toolbar to run the application in Debug mode. (Or, you can press F5.)
View your app in the console window.
Close the application
Press ENTER to close the console window.
Close the Output pane in Visual Studio.
Close Visual Studio.
Next steps
Congratulations on completing this Quickstart! We hope you learned a little bit about C# and the Visual Studio IDE. To learn more, continue with the following tutorials.
Introduction
The C programming language is a general purpose programming language, which relates closely to the way machines work.Understanding how computer memory works is an important aspect of the C programming language. Although C can be consideredas 'hard to learn', C is in fact a very simple language, with very powerful capabilities.
Hello World C# Visual Studio Code 2019
C is a very common language, and it is the language of many applications such as Windows, the Python interpreter, Git, andmany many more.
C is a compiled language - which means that in order to run it, the compiler (for example, GCC or Visual Studio) must take the code thatwe wrote, process it, and then create an executable file. This file can then be executed, and will do what we intended for the programto do.
Our first program
Every C program uses libraries, which give the ability to execute necessary functions. For example, the most basic functioncalled printf, which prints to the screen, is defined in the stdio.h header file.
To add the ability to run the printf command to our program, we must add the following include directive to our first line of the code:
The second part of the code is the actual code which we are going to write. The first code which will run will always residein the main function.
The int keyword indicates that the function main will return an integer - a simple number. The number which will be returnedby the function indicates whether the program that we wrote worked correctly. If we want to say that our codewas run successfully, we will return the number 0. A number greater than 0 will mean that the program that we wrote failed.
For this tutorial, we will return 0 to indicate that our program was successful:
Notice that every statement in C must end with a semicolon, so that the compiler knows that a new statement has started.
Hello World C# Visual Studio Code
Last but not least, we will need to call the function printf to print our sentence.
Exercise
Visual Studio Code C# Hello World App
Change the program at the bottom so that it prints to the output 'Hello, World!'.