switch structure

Problem descriptionBefore referring to the C + + design mode-Simple factory model, due to the limitations of the simple factory model, such as: The factory can now produce producta, PRODUCTB and PRODUCTC three kinds of products, at this time, the

Operator (method composition Two: The composition of the algorithm in the method body one)1. Operation Operation1.1 Overview of OperationsTypes of 1.1.1 Operations: In addition to the usual plus (+), minus (-), multiply (*), except (\), the modulo

1, built-in type: int float and other programming languages to define their own typesClass Type: A class that declares itself, that is, an abstraction of an object2, const double *CP means that the CP is a pointer to a const type double type data,

I believe you have a few common mistakes in PHP development (exit, return, break, continue) to stop the program and loop the keywords.Exit exits all scripts, is a functionThe use of the return language structure---Effect: terminating the execution

Using the JS scripting language to implement a request a date is the day of the year, consider the run-yearWe need to enter the date in the page popup, the code is as follows: Calculate by switch structure A date is the day of the year, consider the

1. Branching structure1.if structureGrammar:if (condition) {statement block;}Attention:1. If the condition is as Boolean as possible, if it is not Boolean, the following condition value will be treated as falseif (0) {}if (0.0) {}if ("") {}if

Start the C + + tour As the old saying goes, "make haste", whether it is building or learning knowledge, it is very important to lay a solid foundation. Without knowledge of the foundation, skyscrapers can not give gifts, learning C + +

$? Represents the return value for executing the previous command: If 0 means execution succeeds, non 0 means execution fails$, $ 、。。。 Represents the parameter 1, parameter 2, respectively 、。。。$# indicates the number of parameters for this program$*/

NanyiThese days, I was reading the language of JavaScript.This book is very thin, more than 100 pages, just over the holidays.The author of the book is Douglas Crockford, one of the most JavaScript-savvy people in the world, and the creator of the

JavaScript Standard Reference Tutorial (Alpha) Noteshttp://javascript.ruanyifeng.com/#introduction2.1.4 N--: Use n again to execute n=n-1;--N: Execute n=n-1 before using n;The 2.1.5 chunk ({}) var does not constitute a separate scope for the

ios training ------My C language notes, look forward to communicating with you!In real life we often need to make different choices based on different conditions. In the program design, it is also necessary to choose different programs according to

How Python programs are executed1. Process overviewPython compiles the code (. py file) into bytecode, gives it to the bytecode virtual machine, and then the interpreter executes the bytecode instruction in one line, thus completing the execution of

> Identifiers: All names and similar distinctions are easy to callNaming rules: composed of a number of letters _$ cannot be case-sensitive with a number cannot be a Java keywordNaming conventions: try to increase readabilityClass Name: Capitalize

1. Overview The code must follow the PSR-1 Basic code specification. The code must be indented with four space characters, not a TAB key. Each line should remain within 80 characters and the soft limit must be 120 characters, but

Keywords are words that have been used by the C language itself and cannot be used for other purposes. For example, a keyword cannot be used as a variable name, a function name, etc. A total of 32 C language keywords are defined by the ANSI standard:

Initialization and configuration of SWFUploadFirst, refer to Swfupload.js in the page, such asThen, initialize the SWFUpload, asvar swfu;Window.onload = function () {SWFU = new SWFUpload ({Upload_url: "http://www.swfupload.org/upload.php",Flash_url:

Note: This is the code specification from the PHPCMS development document, although the development specification is called PHPCMS, but I think all PHP programming should be so. Write so much php, a lot of coding compared to this specification is a

Fig organization in the development of PHP-related specifications, referred to as PSR. There are now 4 code specifications, the recent time to translate into the Chinese version. Suggest doing PHP students are concerned about.Document Warehouse

Write code: 1, clear demand. What I'm going to do. 2, analysis of ideas. What am I going to do? 1,2,3. 3, determine the steps. What statements, methods, and objects are used in each part of the idea. 4, code implementation. Use the specific Java

Ifndef _i386_errno_h#define _i386_errno_h#define EPERM 1/* Operation not permitted * *#define ENOENT 2/* No such file or directory */#define ESRCH 3/* No such process * *#define EINTR 4/* Interrupted system call * *#define EIO 5 */I/O error *