/**********************************************************************************************

* This fiddle is a demo of the library : CodingSeb.ExpressionEvaluator

* See : https://github.com/codingseb/ExpressionEvaluator

* For Others examples : https://dotnetfiddle.net/Packages/41132/CodingSeb_ExpressionEvaluator

**********************************************************************************************/

​

using System;

using System.Collections.Generic;

using CodingSeb.ExpressionEvaluator;

public class Program

{

    public static void Main()

    {

        ExpressionEvaluator evaluator = new ExpressionEvaluator();

        evaluator.Variables["a"] = 1;

        evaluator.Variables["b"] = 2;

        evaluator.Variables["c"] = new SubExpression("a+b");

        evaluator.Variables["d"] = new SubExpression("c+3");

        evaluator.Variables["e"] = "c+3";

        List<string> expressions = new List<string>()

        {

            "a",

            "b",

            "c",

            "d",

            "d-a",

            "e"

        };

        expressions.ForEach(expression => 

        {

            Console.WriteLine(expression);

            Console.WriteLine(evaluator.Evaluate(expression));

            Console.WriteLine(string.Empty);

        });

    }

}