無差別に技術をついばむ鳥

using System;
using System.IO;
using System.Reflection;

namespace Sample
{
    class Program
    {
	//C#の主なシステムタイプの情報を出力する
        static void Main( string[ ] args ) {
            FileStream file = new FileStream( 
               "型の最小値と最大値.txt", FileMode.OpenOrCreate );
            StreamWriter writer = new StreamWriter( file );
            Type[ ] types = new Type[ ] { typeof(sbyte), typeof(byte), 
                typeof(short), typeof(ushort),
                typeof(int), typeof(uint), 
                typeof(long), typeof(ulong), 
                typeof(float), typeof(double),
                typeof(decimal)
            };
            foreach(Type t in types) ShowType( t, writer );
            writer.Close( );
        }
	
	//型の最大値と最小値をコンソールとファイルに出力
        private static void ShowType( Type type, StreamWriter writer ) {
            FieldInfo max = type.GetField( "MaxValue" );
            FieldInfo min = type.GetField( "MinValue" );
            String str = String.Format(
                "型【{0}】の最大値は【{1}】：最小値は【{2}】です。", 
                type.FullName, max.GetValue(null), min.GetValue(null));
            Console.WriteLine( str );
            writer.WriteLine( str );
        }
    }
}