Q#  project  and solution is created using the following commands:

dotnet new console -lang Q# --output FirstQuantum

Visual Studio Code is used to open the project. The project will have two files Driver.cs (C# driver) and Operations.qs (Q#). The Operations.qs is renamed as Quantum.qs.

The code snippet below shows the Quantum.qs after adding the operation HelloWorld.

Code Snippet :Quantum  Q#Example

namespace FirstQuantum
{
    open Microsoft.Quantum.Canon;
    open Microsoft.Quantum.Primitive;

    /// HelloWorld Operation
    /// # Summary
    /// prints the message
    /// # Returns
    /// a Unit
    operation HelloWorld () : Unit {
        Message("Q# - Hello World");
    }

}

The Driver file will have the following code to execute HelloWorld.

Code Snippet :Driver C# Example

/////////////////////////////////////////////////////////////////////
// This file contains the driver class.
//////////////////////////////////////////////////////////////////////
using...