hbr discount

Title:Do a shopping mall cashier's small program, may appear the situation includes: normal charges, 90 percent discount, 70 percent discount, full 300 minus 50 and other different changes at any time of the preferential activities. The interface is as follows: Analysis: First of all, we write a parent class Cashsuper for collecting money. This parent class is used to include other kinds of charges: norm

Second week of August 4, 2001 A. Sales Details Sales details are reflected in the Order Details table, but lack of ProductName, so we connect the procucts and Order Details table can get complete sales details. This last week's final query has been completely done, and here it is repeated. It is also noted that the calculated formula for the actual amount of sales is: quantity * unit Price * (1-discount). In SQL Server, this statement is as follows

Before each control starts drawing, a WM_CTLCOLOR advertisement message is sent to its parent window, in which you can set the foreground color, background color, and font for the control's display text. The message handler also requires that the handle of a brush be returned to erase its client area before the control's specific drawing.Hbrush Ctestdlg::onctlcolor (cdc* PDC, cwnd* pWnd, UINT nCtlColor){Hbrush HBR = Cdialog::onctlcolor (PDC, PWnd, nCt

1. Change the background color of the dialog box and add a member variable PRIVATE: cbrush m_brush; to the class of the dialog box. Add the following code to the class constructor: m_brush.createsolidbrush (RGB (255,); // initialize to Blue to add a wm_ctlcolor message response function to the dialog box, message response function specially colored for controls. The Code is as follows: hbrush csettingdlg: onctlcolor (CDC * PDC, cwnd * pwnd, uint nctlcolor) { Hbrush

(cdc* PDC, cwnd* pwnd, UINT nCtlColor){Hbrush HBR = Cdialog::onctlcolor (PDC, pwnd, nCtlColor);return HBR;return m_brush;} Of course, the function is also predefined in the. h file, where the background color of the dialog box is all blue. 2, if we want to set a dialog box control background and text color, as long as the above return m_brush; if (Pwnd->getdlgctrlid () ==idc_line_style){Pdc->settextcolor (

ROLLUP or CUBE keyword, some subtotal rows will be generated, fields excluded from grouping factors in these rows will be set to NULL, so there is still a situation, such as the existence of empty rows in the list based on grouping, NULL is also expressed as a group, so here we can not simply judge whether it is a subtotal record by NULL. The following example shows the result. As we mentioned above, we now add a "Discount column" (

{@ overridePublic VoidStrategyinterface (){//Related Services}} Use Cases Suppose we want to design a shopping cart system for e-commerce websites selling books. The simplest case is to multiply the unit price of all goods by the quantity, but the actual situation must be more complicated than that. For example, this website may offer a 20% discount to all senior members, a 10% discount to intermedi

For the following program:View code # include # Include Using STD: string;// Using STD: size_t;Using STD: Endl;Using STD: cout;Class item_base {Public:Item_base (const string book = "", double sales_price = 0.0 ):ISBN (book), price (sales_price ){Cout }String book () const {return ISBN ;}Virtual double net_price (size_t N) const{Return N * price;}Item_base (const item_base Ib): ISBN (IB. ISBN), price (IB. Price ){Cout }Item_base operator = (const item_base RHs ){If (this! = RHs ){ISBN = RH

insurance industry funds.Later, rich-country funds also out of the Tracking Securities Industry grading Fund, but "securities", "brokerage", "insurance" name are used, how to do? In the beginning can only be called "FG Securities B"--FG is the ruby abbreviation of rich countries, but where do investors know what FG means?Then the rich-country fund suddenly brainwave, renamed " Security B-Class "! So the original is called "Shen million Securities B", this is called "rich Country securities B-Cl

+ 1 pri nt"\ rCurrent progress: {:. 2f}% ". Format (Count * 100/len (LST)), end=""Continue def main (): # Get the URL of the stock list Stock_list_url =' http://quote.eastmoney.com/stocklist.html '# get the URL of stock information Stock_info_url =' https://gupiao.baidu.com/stock/'# Save to disk's root directory output_file =' E:/baidustockinfo.txt 'Slist = [] Getstocklist (Slist, Stock_list_url) getstockinfo (Slist, Stock_info_url, output_file) main () (4) Output Results {' Yesterday's recei

strategy { @Override public void Strategyinterface () { // Related Business } } second, the use of the sceneSuppose now to design a shopping cart system for e-commerce sites that sell all kinds of books. One of the simplest cases is to multiply the unit price of all goods, but the reality is definitely more complicated than this. For example, this website may offer 20% discount per copy for all Premium members, 10%

Bookstore for the "Harry Potter" series of books for promotional activities, a total of 5 volumes, with numbers 0, 1, 2, 3, 4, a single volume of 8 yuan, the specific discount is as follows:Discount on this number2 5%3 10%4 20%5 25%Depending on the number of volumes purchased and this number, different discount rules will be applicable. The singular book only corresponds to one

1,Common promotion models The promotion management system is used in many places. It is often reflected that many small and medium-sized enterprises have their own promotional activities when they go to the supermarket. To engage in promotional activities, it is best to have application software support, in this way, flexible management is convenient. However, manual processing is inefficient. The categories and examples of common promotions are as follows: Model Classification Seria

{ @Override public void Strategyinterface () { //related business }}Public class CONCRETESTRATEGYC implements strategy { @Override public void Strategyinterface () { //related business }}　　Usage ScenariosSuppose now to design a shopping cart system for e-commerce sites that sell all kinds of books. One of the simplest cases is to multiply the unit price of all goods, but the reality is definitely more complicated than this. For example, this website may offer 20%

multiply the unit price of all goods, but the reality is definitely more complicated than this. For example, this website may offer 20% discount per copy for all Premium members, 10% discount per copy for intermediate members and no discount for junior members.According to the description, the discount is based on one

}　　Using scene instances:Suppose a website sells a variety of books, does not offer a discount to Junior members, offers a 10% discount per copy for intermediate members, and offers 20% discount for Premium members per copy of the promotion.The discount is based on one of the following 3 algorithms:Algorithm 1: No dis

As needed, the background color of the GroupBox control and the text control static is set to match. Set GroupBox background color in Onctrlcolor: if (Pwnd->getdlgctrlid () ==idc_g) {//groupbox background colorCRect RC;GetDlgItem (Idc_g)->getclientrect (RC);Pdc->fillsolidrect (Rc,rgb (70,219,182));} if (Pwnd->getdlgctrlid () ==idc_static1) {//static background colorPdc->setbkcolor (RGB (70,219,182));} Set the effect after: There is a white background does not meet the requirements: Need to add

The MFC 4.2 (Visual Studio 6) is easy to implement by simply processing the WM_CTLCOLOR message under the dialog box class, and then the following code: Copy Code code as follows: Hbrush Calphaeditboxdlg::onctlcolor (cdc* PDC, cwnd* pwnd, UINT nCtlColor) { Hbrush HBR = Cdialog::onctlcolor (PDC, pwnd, nCtlColor); Todo:change any attributes to the DC here Pdc->setbkmode (Transparent);