Imports System
Imports uCalcSoftware
Public Module Program
   Public Sub Main()
      Dim uc As New uCalc()
      '// Define variables representing configuration or user inputs.
      uc.DefineVariable("principal = 20000")
      uc.DefineVariable("annual_rate = 0.0575")
      uc.DefineVariable("years = 4")
      
      '// Evaluate an expression combining these variables.
      Dim interest = uc.Eval("principal * annual_rate * years")
      Console.WriteLine($"Total Interest: {interest}")
   End Sub
End Module