using System;
using System.Diagnostics;

public class Struct
{
    const int N = 20000000;

    [Benchmark]
    public static int fibo_local()
    {
        int a = 1;
        int b = 1;
        int tmp = 0;
        for(int i=0; i<N; i++)
            {
                tmp = a+b;
                a = b;
                b = tmp;
            }
        return b;
    }

    struct MyLocals {
        public int a;
        public int b;
        public int tmp;
        public int i;
    }

    [Benchmark]
    public static int fibo_struct()
    {
        MyLocals v;
        v.a = 1;
        v.b = 1;
        v.tmp = 0;
        for(v.i=0; v.i<N; v.i++)
            {
                v.tmp = v.a+v.b;
                v.a = v.b;
                v.b = v.tmp;
            }
        return v.b;
    }

}