Running CSHARP - Java - C++ Files

This note explains different ways to run C# (.cs), Java (.java), and C++ (.cpp) files using various tools and environments.

C# (.cs)

1. Without Installing .NET SDK (Using the Old Framework)

• Prerequisite: No need to install the .NET SDK, as Windows has an older version pre-installed.
• Steps:
  1. Navigate to the directory: C:\Windows\Microsoft.NET\Framework\v4.0.30319.
  2. Open Command Prompt (as Administrator).
  3. Run the following command:

     csc filename.cs && filename

2. With .NET SDK Installed

• Prerequisite: Ensure you have .NET SDK installed.
• Steps:
  1. Open the folder containing your .cs file in Visual Studio Code (VSCode).
  2. Open a new terminal in VSCode.
  3. Run the following command to create a new console app:

     dotnet new console

3. Without SDK + Using Notepad++ (NppExec Plugin)

• Prerequisite: Notepad++ with the NppExec plugin installed.
• Steps:
  1. Save your file.
  2. Use the following NppExec code:

     npp_save
     cd $(CURRENT_DIRECTORY)
     csc $(FILE_NAME)
     $(NAME_PART)

4. In Visual Studio Code (VSCode)

• Steps:
  1. Open a terminal and change directory to where you want to create the console application:

     cd D:
     cd D:\Users\msash\Desktop  // (or your preferred directory)

  2. Create a new console application:

     dotnet new console -n YourAppName

  3. Change into the application directory:

     cd YourAppName

  4. Open the project in VSCode:

     code .

  5. Build the project (optional if you prefer using the CodeRunner extension in VSCode):

     dotnet build

  6. Run the application:

     dotnet run

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Java (.java)

Using Notepad++ (NppExec Plugin)

• Prerequisite: Notepad++ with NppExec plugin installed.
• Steps:
  1. Save your .java file.
  2. Use the following NppExec code:

     npp_save
     cd $(CURRENT_DIRECTORY)
     javac $(FILE_NAME)
     java $(NAME_PART)

Manually in Command Line

• Steps:
  1. Open the terminal or Command Prompt.
  2. Navigate to the directory containing the .java file.
  3. Compile the Java file:

     javac filename.java

  4. Run the compiled Java program:

     java filename

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C++ (.cpp)

Using g++ Compiler

• Prerequisite: Install the g++ compiler (usually comes with the GCC package).
• Steps:
  1. Open a terminal.
  2. Navigate to the directory containing the .cpp file.
  3. Compile the C++ file:

     g++ filename.cpp -o filename

  4. Run the compiled program:

     ./filename

Using Notepad++ (NppExec Plugin)

• Prerequisite: Notepad++ with NppExec plugin installed.
• Steps:
  1. Save your .cpp file.
  2. Use the following NppExec code:

     npp_save
     cd $(CURRENT_DIRECTORY)
     g++ $(FILE_NAME) -o $(NAME_PART)
     $(NAME_PART)

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Summary of Commands:

• For C++:

  • Using g++:

    g++ filename.cpp -o filename && ./filename

• For Java:

  • Using javac and java:

    javac filename.java && java filename

• For C#:

  • Using csc:

    csc filename.cs && filename

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Notes:

• Ensure the correct environment is set up (e.g., .NET SDK for C#, Java JDK for Java, and g++ for C++).
• Using an IDE like VSCode or Notepad++ with the right plugins can make compiling and running your programs much easier.