小编Ama*_*ine的帖子

我需要在SQL服务器中创建一个函数,该函数返回夏令时开始日期时间和夏令时结束日期时间.

我在网上看到了一些例子,但他们都使用了3月的第1个日期和11月的第1个日期,这在技术上并不正确.

夏令时从3月的第2个星期日凌晨2点开始,到11月的第一个星期日凌晨2点结束.

我从下面的代码开始,但我确定它错了.任何帮助表示赞赏!:)

DECLARE @DSTSTART DATETIME

SELECT @DSTSTART = CASE WHEN 
DATEPART(MONTH, SYSDATETIME()) = 3
AND DATEPART(weekday, SYSDATETIME()) = 1
AND DATEDIFF(week,dateadd(week, datediff(week, 0, dateadd(month, datediff(month, 0, SYSDATETIME()), 0)), 0), SYSDATETIME() - 1) = 2
AND DATEPART(HOUR, SYSDATETIME()) = 2
THEN SYSDATETIME()
END
RETURN (@DSTSTART)
END
GO

我正在做一些功课并收到最奇怪的错误.希望你能提供帮助.我收到此错误:

无法在课堂上访问私人会员

注意:我显然没有写完这个,但我试着去测试错误.非常感谢您的任何输入!

// Amanda 
// SoccerPlayer.cpp : main project file.
// October 6, 2012
/* a. Design a SoccerPlayer class that includes three integer fields: a player's jersey     number,
number of goals, and number of assists. Overload extraction and insertion operators for     the class.
b. Include an operation>() function for the class. One SoccerPlayer is considered greater
than another if the sum of goals plus assists is greater.
c. Create an array of 11 SoccerPlayers, then use the …

我正在进行一个分数分配,我提示用户输入两个分数,然后我对这两个分数进行加,减,乘和除.我知道我仍然需要减少分数,但我无法弄清楚为什么分母乘以10.如果我为frac1输入1 1/2,为frac2输入2 2/5,则分母为100而不是10太奇怪了..非常感谢!:)

// fraction9.cpp : main project file.
#include "stdafx.h"
#include<conio.h>
#include<iostream>
 #include<string>
using namespace std;


class Fraction
{
private:
   int whole;
   int numerator;       // may be any integer
   int denominator;     // should always be positive
public:
 Fraction();    // Set numerator = 0, denominator = 1.
 Fraction(int w, int n, int d=1);   // constructor with parameters
            //  acts as conversion constructor

 // operator overload as member
 Fraction operator+ (const Fraction& f) const; 
 Fraction operator- (const Fraction& f) const;
 Fraction …