using System;

using System.Linq;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        var values = Enumerable.Range(1, 20).Select(x => x*.1).ToList();

        var actions = new[]{

            new Func<double, dynamic>(x => (int)x),

            new Func<double, dynamic>(x => Convert.ToInt32(x)),

        };

        var sb = new StringBuilder();

        sb.AppendLine("Number:\t(int)\tConvert.ToInt32");

        sb.AppendLine(string.Join("\n", values.Select(v => string.Format("{0:N1}:\t\t{1}", v, string.Join("\t", actions.Select(x => x(v)))))));

        Console.Write(sb.ToString());

    }

}