一、 作业要求
编写程序实现以下任务：
1.1由公历年月日化为儒略日
1.2由儒略日转化为公历年月日
1.3儒略日的应用
1.3.1计算两个日期间的间隔天数
1.3.2计算星期几
1.3.3计算年积日(DOY)
1.3.4由年积日计算年月日
二、 程序设计
2.1 窗体设计
2.2 代码实现
2.2.1由公历年月日化为儒略日
//由公历年月日转化为儒略日的函数
publicdouble GLToJD(double Y, double M, double D)
{
double JDtime;
JDtime = 367 * Y - Math .Truncate(7 * (Y + Math .Truncate((M + 9) / 12)) / 4) + Math .Truncate(275
* M / 9) + D + 1721013.5;
return JDtime;
}
2.2.2由儒略日转化为公历年月日
//由儒略日转化为公历年月日的函数
publicvoid JDToGL(double JDtime, outdouble Y, outdouble M, outdouble D)
{
double a, b, c, d, e;
a = Math .Truncate(JDtime + 0.5);
b = a + 1537;
c = Math .Truncate((b - 122.1) / 365.25);
d = Math .Truncate(365.25 * c);
e = Math .Truncate((b-d)/30.6001);
D=b-d-Math .Truncate (30.6001*e)+JDtime+0.5- Convert .ToInt32(JDtime+0.5); M = e - 1 - Math .Truncate(e / 14) * 12;
Y = c - 4715 - Math .Truncate((7 + M) / 10);
}
2.2.3 计算两个日期间的间隔天数
privatevoid JGTSbutton_Click(object sender, EventArgs e)
{
double JDtime1, JDtime2,Y1,M1,D1,Y2,M2,D2,JGTS;
if (Year31.Text == "" || Month31.Text == "" || Day31.Text == "" || Year31.Text == "" ||
Month31.Text == "" || Day31.Text == "" )
{
MessageBox .Show(" 输入的日期不能为空！" );
}
else
{
Y1 = double .Parse(Year31.Text);
M1 = double .Parse(Month31.Text);
D1 = double .Parse(Day31.Text);
JDtime1 = GLToJD(Y1, M1, D1);
Y2 = double .Parse(Year32.Text);
M2 = double .Parse(Month32.Text);
D2 = double .Parse(Day32.Text);
JDtime2 = GLToJD(Y2, M2, D2);
JGTS = Math .Abs(JDtime2 - JDtime1);
JG.Text = JGTS.ToString();
}
}
2.2.4 计算星期几
privatevoid XQbutton_Click(object sender, EventArgs e)
{
double JDtime,Y,M,D, XQ;
if (Year4.Text == "" || Month4.Text == "" || Day4.Text == "" )
{
MessageBox .Show(" 输入的日期不能为空！" );
}
else
{
Y = double .Parse(Year4.Text);
M = double .Parse(Month4.Text);
D = double .Parse(Day4.Text);
JDtime = GLToJD(Y, M, D);
XQ = (JDtime + 1.5) % 7;
if (XQ == 0)
{
weekDay.Text = " 星期日" ;
}
if (XQ == 1)
{
weekDay.Text = " 星期一" ;
}
if (XQ == 2)
{
weekDay.Text = " 星期二" ;
}
if (XQ == 3)
{
weekDay.Text = " 星期三" ;
}
if (XQ == 4)
{
weekDay.Text = " 星期四" ;
}
if (XQ == 5)
{
weekDay.Text = " 星期五" ;
}
if (XQ == 6)
{
weekDay.Text = " 星期六" ;
}
}
}
2.2.5 计算年积日
privatevoid NJRbutton_Click(object sender, EventArgs e)
{
double Y,M,D,JDtime1,JDtime2;
if (Year5.Text == "" || Month5.Text == "" || Day5.Text == "" )
{
MessageBox .Show(" 输入的日期不能为空！" );
}
else
{
Y = double .Parse(Year5.Text);
M = double .Parse(Month5.Text);
D = double .Parse(Day5.Text);
JDtime1 = GLToJD(Y,M-1,D);
JDtime2 = GLToJD(Y,0,0 );
NJR1.Text = (JDtime1-JDtime2).ToString();
}
}
2.2.6 由年积日计算年月日
privatevoid NJRTONYRbutton_Click(object sender, EventArgs e)
{
double JDtime, Y1, Y, M, D,NJR;
if (Year6.Text == "" || NJR2.Text == "" )
{
MessageBox .Show(" 输入的日期不能为空！" );
}
else
{
NJR = double .Parse(NJR2.Text);
Y1 = double .Parse(Year6.Text);
JDtime = GLToJD(Y1, 0, 0) + NJR+30;
JDToGL(JDtime ,out Y, out M, out D);
textBox1.Text = JDtime.ToString ();
GLNYR.Text = Y.ToString() + " 年" + M.ToString() + " 月" + D.ToString() + " 日" ; }
}
2.3 运行结果
一、 作业要求
编写程序实现以下任务：
1.1由公历年月日化为儒略日
1.2由儒略日转化为公历年月日
1.3儒略日的应用
1.3.1计算两个日期间的间隔天数
1.3.2计算星期几
1.3.3计算年积日(DOY)
1.3.4由年积日计算年月日
二、 程序设计
2.1 窗体设计
2.2 代码实现
2.2.1由公历年月日化为儒略日
//由公历年月日转化为儒略日的函数
publicdouble GLToJD(double Y, double M, double D)
{
double JDtime;
JDtime = 367 * Y - Math .Truncate(7 * (Y + Math .Truncate((M + 9) / 12)) / 4) + Math .Truncate(275
* M / 9) + D + 1721013.5;
return JDtime;
}
2.2.2由儒略日转化为公历年月日
//由儒略日转化为公历年月日的函数
publicvoid JDToGL(double JDtime, outdouble Y, outdouble M, outdouble D)
{
double a, b, c, d, e;
a = Math .Truncate(JDtime + 0.5);
b = a + 1537;
c = Math .Truncate((b - 122.1) / 365.25);
d = Math .Truncate(365.25 * c);
e = Math .Truncate((b-d)/30.6001);
D=b-d-Math .Truncate (30.6001*e)+JDtime+0.5- Convert .ToInt32(JDtime+0.5); M = e - 1 - Math .Truncate(e / 14) * 12;
Y = c - 4715 - Math .Truncate((7 + M) / 10);
}
2.2.3 计算两个日期间的间隔天数
privatevoid JGTSbutton_Click(object sender, EventArgs e)
{
double JDtime1, JDtime2,Y1,M1,D1,Y2,M2,D2,JGTS;
if (Year31.Text == "" || Month31.Text == "" || Day31.Text == "" || Year31.Text == "" ||
Month31.Text == "" || Day31.Text == "" )
{
MessageBox .Show(" 输入的日期不能为空！" );
}
else
{
Y1 = double .Parse(Year31.Text);
M1 = double .Parse(Month31.Text);
D1 = double .Parse(Day31.Text);
JDtime1 = GLToJD(Y1, M1, D1);
Y2 = double .Parse(Year32.Text);
M2 = double .Parse(Month32.Text);
D2 = double .Parse(Day32.Text);
JDtime2 = GLToJD(Y2, M2, D2);
JGTS = Math .Abs(JDtime2 - JDtime1);
JG.Text = JGTS.ToString();
}
}
2.2.4 计算星期几
privatevoid XQbutton_Click(object sender, EventArgs e)
{
double JDtime,Y,M,D, XQ;
if (Year4.Text == "" || Month4.Text == "" || Day4.Text == "" )
{
MessageBox .Show(" 输入的日期不能为空！" );
}
else
{
Y = double .Parse(Year4.Text);
M = double .Parse(Month4.Text);
D = double .Parse(Day4.Text);
JDtime = GLToJD(Y, M, D);
XQ = (JDtime + 1.5) % 7;
if (XQ == 0)
{
weekDay.Text = " 星期日" ;
}
if (XQ == 1)
{
weekDay.Text = " 星期一" ;
}
if (XQ == 2)
{
weekDay.Text = " 星期二" ;
}
if (XQ == 3)
{
weekDay.Text = " 星期三" ;
}
if (XQ == 4)
{
weekDay.Text = " 星期四" ;
}
if (XQ == 5)
{
weekDay.Text = " 星期五" ;
}
if (XQ == 6)
{
weekDay.Text = " 星期六" ;
}
}
}
2.2.5 计算年积日
privatevoid NJRbutton_Click(object sender, EventArgs e)
{
double Y,M,D,JDtime1,JDtime2;
if (Year5.Text == "" || Month5.Text == "" || Day5.Text == "" )
{
MessageBox .Show(" 输入的日期不能为空！" );
}
else
{
Y = double .Parse(Year5.Text);
M = double .Parse(Month5.Text);
D = double .Parse(Day5.Text);
JDtime1 = GLToJD(Y,M-1,D);
JDtime2 = GLToJD(Y,0,0 );
NJR1.Text = (JDtime1-JDtime2).ToString();
}
}
2.2.6 由年积日计算年月日
privatevoid NJRTONYRbutton_Click(object sender, EventArgs e)
{
double JDtime, Y1, Y, M, D,NJR;
if (Year6.Text == "" || NJR2.Text == "" )
{
MessageBox .Show(" 输入的日期不能为空！" );
}
else
{
NJR = double .Parse(NJR2.Text);
Y1 = double .Parse(Year6.Text);
JDtime = GLToJD(Y1, 0, 0) + NJR+30;
JDToGL(JDtime ,out Y, out M, out D);
textBox1.Text = JDtime.ToString ();
GLNYR.Text = Y.ToString() + " 年" + M.ToString() + " 月" + D.ToString() + " 日" ; }
}
2.3 运行结果