C++ with VS Code

C/C++ for Visual Studio Code

https://code.visualstudio.com/docs/languages/cpp

VS Code is an editor, NOT IDE. It does not have C++ compiler or debugger. You will need to install these tools or use those already installed on your computer.

For Window:

• GCC, MSVC

• MSVC is installed when Visual Studio Community is installed.

MacOS:

• GCC, Clang

• macOS users can get the Clang tools with Xcode

Steps

1. Install C++ Extension in VS Code

2. Install Compiler (GCC)

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Step 1: Install C++ Extension in VS Code

1. Open VS Code.

2. Select the Extensions view icon on the Activity bar or use the keyboard shortcut (Ctrl+Shift+X).

3. Search for 'C++'.

4. Select Install.

After you install the extension, when you open or create a *.cpp file, you will have syntax highlighting (colorization), smart completions and hovers (IntelliSense), and error checking.

Step 2: Install Compiler

Lets use GCC for this tutorial.

Check if you have a compiler installed

Make sure your compiler executable is in your platform path (%PATH on Windows, $PATH on Linux and macOS) so that the C/C++ extension can find it. You can check availability of your C++ tools by opening the Integrated Terminal (Ctrl+`) in VS Code and trying to directly run the compiler.

Checking for the GCC compiler g++:

g++ --version

Checking for the Clang compiler clang:

clang --version

Install MinGW-x64 for GCC

Follow the Installation instructions on the MSYS2 website to install Mingw-w64.

Take care to run each required Start menu and pacman command.

Open MSYS2 with terminal for the UCRT64 environment

Install mingw-w64 GCC by

pacman -S mingw-w64-ucrt-x86_64-gcc

You will need to install the full Mingw-w64 toolchain to get the gdb debugger.

pacman -S --needed base-devel mingw-w64-x86_64-toolchain

Then, select mingw-w64-x86_64-gbd

Add the MinGW compiler to your path

Add the path to your Mingw-w64 bin folder to the Windows PATH environment variable by using the following steps:

1. In the Windows search bar, type 'settings (설정)' to open your Windows Settings.

2. Search for Edit environment variables for your account. (계정의 환경 변수 편집)

3. Choose the Path variable in your User variables and then select Edit.

4. Select New and add the Mingw-w64 destination folder path: C:\msys64\mingw64\bin.

5. Select OK to save the updated PATH. You will need to reopen any console windows for the new PATH location to be available.

To check your MinGW installation, open a new Command Prompt and type:

gcc --version

Test Code

We'll create the simplest Hello World C++ program.

Create a folder called "HelloWorld" and open VS Code in that folder (code . opens VS Code in the current folder):

mkdir HelloWorld
cd HelloWorld
code .

Accept the Workspace Trust dialog by selecting Yes, I trust the authors

You can also open VS Code directly.

Now create a new file called helloworld.cpp with the New File button in the File Explorer or File > New File command.

File Explorer New File button

Now paste in this source code:

#include <iostream>

int main()
{
    std::cout << "Hello World" << std::endl;
}

Now press Ctrl+S to save the file. You can also enable Auto Save to automatically save your file changes, by checking Auto Save in the main File menu.

Build Hello World

Now that we have a simple C++ program, let's build it. Select the Terminal > Run Build Task command (Ctrl+Shift+B) from the main menu.

Choose GCC toolset MinGW: C/C++: g++.exe build active file.

This will compile helloworld.cpp and create an executable file called helloworld.exe, which will appear in the File Explorer.

Run Hello World

VS Code Integrated Terminal, run your program by typing ".\helloworld".

You can also run by Ctrl+F5

If everything is set up correctly, you should see the output "Hello World".