using Mono.CSharp; // create a new resolve context var rc = new ResolveContext(); // add a new symbol to the context rc.AddVariable("x", typeof(int)); // check if the set of symbols has been resolved var hasSet = rc.HasSet(ResolveContext.State.Accessible); if (!hasSet) { // resolve the set of symbols rc.Resolve(ResolveContext.State.Accessible); } // use the variables Console.WriteLine(x);In this example, we create a new resolve context and add a variable to it. We then check if the set of symbols has been resolved using the `HasSet` property. If it hasn't, we resolve the set using the `Resolve` method. Finally, we use the variable in the console output. The `Mono.CSharp` namespace belongs to the Mono compiler implementation for C# and supports the compilation and execution of C# code.