HAHAHA

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using Microsoft.CSharp;
using System.CodeDom.Compiler;
using System.Reflection;
using System.Diagnostics;
using System.IO;
using System.Threading;

namespace VariableDeclarationFinal
{
    class CompileCode
    {
        private static string MyCode(string decleration, string appName)
        {
            return "using System;\n namespace " + appName + "\n{\npublic class " + appName + "\n{" +
                   "public static void Main(string[] args)\n{\n\t\t" +
                   decleration + "\nConsole.ReadLine();\n}\n}\n}";
        }

        public static bool DebugProgram(string text)
        {
            string appName = "lololol";
            string decleration = MyCode(text, appName);
            bool result = false;
            CSharpCodeProvider codeProvider = new CSharpCodeProvider();
            ICodeCompiler compiler = codeProvider.CreateCompiler();
            CompilerParameters parameters = new CompilerParameters();
            parameters.GenerateExecutable = true;
            parameters.GenerateInMemory = true;
            parameters.IncludeDebugInformation = true;

            parameters.OutputAssembly = @"C:\Users\" + Environment.UserName + "\\Desktop\\" + appName + ".exe";
            parameters.MainClass = appName + "." + appName;
            foreach (Assembly asm in AppDomain.CurrentDomain.GetAssemblies())
            {
                parameters.ReferencedAssemblies.Add(asm.Location);
            }
            String code = decleration.ToString();
            CompilerResults results = compiler.CompileAssemblyFromSource(parameters, code);
            if (results.Errors.Count > 0)
            {
                result = false;
            }
            else
            {
                try
                {
                    result = true;
                }
                catch { }
            }
            return result;
        }
    }
}


===============================================


while (args != null)
            {
                string text = Console.ReadLine();
                if (CompileCode.DebugProgram(text))
                {
                    Console.ForegroundColor = ConsoleColor.Magenta;
                    Console.WriteLine("Valid");
                }
                else
                {
                    Console.ForegroundColor = ConsoleColor.Red;
                    Console.WriteLine("Invalid");
                }
                Console.ResetColor();
            }