四捨五入

2009-05-12

2201
0

利用Math.Round(d0,0)方法四捨五入
與利用Math.Round(d0, MidpointRounding.AwayFromZero)方法四捨五入

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        double d0 = 1.4;
        double d1 = 1.5;
        double d2 = 1.6;
        double d3 = 2.4;
        double d4 = 2.5;
        double d5 = 2.6;

Response.Write(d0.ToString() + "==利用Math.Round(d0,0)方法四捨五入後" + Math.Round(d0, 0) + " ");
 Response.Write(d1.ToString() + "==利用Math.Round(d0,0)方法四捨五入後" + Math.Round(d1, 0) + " ");
 Response.Write(d2.ToString() + "==利用Math.Round(d0,0)方法四捨五入後" + Math.Round(d2, 0) + " ");
 Response.Write(d3.ToString() + "==利用Math.Round(d0,0)方法四捨五入後" + Math.Round(d3, 0) + " ");
 Response.Write(d4.ToString() + "==利用Math.Round(d0,0)方法四捨五入後" + Math.Round(d4, 0) + " ");
 Response.Write(d5.ToString() + "==利用Math.Round(d0,0)方法四捨五入後" + Math.Round(d5, 0) + " ");

Response.Write(d0.ToString() + "==利用Math.Round(d0, MidpointRounding.AwayFromZero)方法四捨五入後" + Math.Round(d0, MidpointRounding.AwayFromZero) + " ");
 Response.Write(d1.ToString() + "==利用Math.Round(d0, MidpointRounding.AwayFromZero)方法四捨五入後" + Math.Round(d1, MidpointRounding.AwayFromZero) + " ");
 Response.Write(d2.ToString() + "==利用Math.Round(d0, MidpointRounding.AwayFromZero)方法四捨五入後" + Math.Round(d2, MidpointRounding.AwayFromZero) + " ");
 Response.Write(d3.ToString() + "==利用Math.Round(d0, MidpointRounding.AwayFromZero)方法四捨五入後" + Math.Round(d3, MidpointRounding.AwayFromZero) + " ");
 Response.Write(d4.ToString() + "==利用Math.Round(d0, MidpointRounding.AwayFromZero)方法四捨五入後" + Math.Round(d4, MidpointRounding.AwayFromZero) + " ");
 Response.Write(d5.ToString() + "==利用Math.Round(d0, MidpointRounding.AwayFromZero)方法四捨五入後" + Math.Round(d5, MidpointRounding.AwayFromZero) + " ");
 }
}

執行結果

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