Stopwatch Profiler Test

#define PROFILE

using System;
using System.Diagnostics;
using System.Numerics;

namespace profiletest
{
    class Program
    {
        static void Main(string[] args)
        {
            Stopwatch total = Stopwatch.StartNew();
#if PROFILE
            Stopwatch initn = new Stopwatch();
            Stopwatch initf = new Stopwatch();
            Stopwatch loop = new Stopwatch();
            Stopwatch body = new Stopwatch();
            initn.Start();
#endif
            int n = 100;
#if PROFILE
            initn.Stop();
            initf.Start();
#endif
            BigInteger f = 1;
#if PROFILE
            initf.Stop();
            loop.Start();
#endif
            for (int i = n; i > 1; i--)
            {
#if PROFILE
                loop.Stop();
                body.Start();
#endif
                f *= i;
#if PROFILE
                body.Stop();
                loop.Start();
#endif
            }
#if PROFILE
            loop.Stop();
#endif
            total.Stop();
            Console.WriteLine(f);
            Console.ReadLine();
            Console.WriteLine("             Line             |  Ticks");
            Console.WriteLine("------------------------------|----------");
            Console.WriteLine("                              |");
#if PROFILE
            Console.WriteLine("int n = 100;                  |{0,10}", initn.ElapsedTicks);
            Console.WriteLine("BigInteger f = 1;             |{0,10}", initf.ElapsedTicks);
            Console.WriteLine("for (int i = n; i > 1; i--)   |{0,10}", loop.ElapsedTicks);
            Console.WriteLine("{                             |");
            Console.WriteLine("    f *= i;                   |{0,10}", body.ElapsedTicks);
            Console.WriteLine("}                             |");
            Console.WriteLine("                              |");
#endif
            Console.WriteLine("Total time:                   |{0,10}", total.ElapsedTicks);
#if PROFILE
            Console.WriteLine("Stopwatch overhead:           |{0,10}", total.ElapsedTicks - initn.ElapsedTicks - initf.ElapsedTicks - loop.ElapsedTicks - body.ElapsedTicks);
#endif
            Console.ReadLine();
        }
    }
}