C++

　　In many cases, the application needs to implement the Excel data import function, the data if only dozens of, or hundreds, even thousands, the speed is OK.But not only that, if the customer provides you with the Excel itself has duplicate data, or

First, open our Visual C + + 6.0 software, I use the Chinese version, the software main interface as shown in:1. Then click on the file in the toolbar, there is a new menu, then we can set up our workspace, as shown in:2. Then click OK in the step

1. As stated in clause 19 and clause 20, the construction and destruction of temporary objects increases the operating costs of the program, so it is necessary to take measures to avoid the creation of temporary objects. Article 20 describes a

Reprinted from: http://soft.chinabyte.com/database/248/12193748.shtml"C Expert Programming" chapter 3rd studyThe statement in C is a headache, especially if you are a beginner, and you will be afraid of the following formulas, even if you are a

reproduced: http://www.cnblogs.com/zhangdongsheng/p/3411056.htmlEvery time to remote debugging to see a half-day xe2 English help document, today just a bit of time, write it down.First, overview:First of all, C + + Builder remote debugging in two

Programming Question #: Output format for real numbersSource: POJ (Coursera statement: The exercises completed on POJ will not count against the final results of Coursera. )Note: Total time limit: 1000ms memory limit: 1000kBDescribeThe flow

1. High-precision addition, subtraction, multiplication#include #include #include void plus (char *a,char *b,char *c);// Custom high-precision addition function void sub (char *a,char *b,char *c);//Custom high-precision subtraction function void

Item 13:use objects to manage resources. People who are familiar with smart pointers are certainly not unfamiliar with this. Automatically frees resources by using the features of object Auto-destruction in C + +. The C + + compiler does not

directory of this document One, pointing to the elements of a one-dimensional array Second, use the pointer to iterate over the array elements Iii. summary of pointers and arrays Iv. arrays, pointers, and function parameters

4.2 Virtual Member Functions (dummy member function)Have seen the general implementation model of virtual function: Each class has a virtual table containing the address of the function virtual function in the class, then each object has a vptr,

First, static     each static A data member is an object associated with a class and is not associated with an object of that class ! The non-static data member exists in each object of the class type, and the static data member is

Chapter 7th the singular human affairs of the C + + worldIn the martial arts novels, the first into the martial arts of the head of the boy is always to meet a few odd people, a few different things, after the expert's guidance, experience a temper,

Well, it was supposed to have been written last night, and it's been dragged to this morning because of some problems with the system. All right, no more nonsense.Always listen to the song, must have seen the lyrics it. Of course, the lyrics we're

Turn: A comprehensive summary of C + + constThe use of the Const keyword in C + + is very flexible, and using the const will greatly improve the robustness of the program, I found in various aspects of the information summarized below, hoping to

The function of electronic whiteboard and courseware is a necessary function in the online teaching system, this article introduces how to realize the basic function of electronic whiteboard based on OMCS, and the function of courseware: Uploading

Test class public class Script_common {public string read (string filename) {return SYSTEM.IO.FILE.R Eadalltext (filename); The public void log (object obj) {Console.WriteLine (obj). GetType () + "-" + obj); The public void demo

Polymorphic1. Virtual method2 Abstract classObject-oriented Calculator case: classProgram {Static voidMain (string[] args) { //implementing Polymorphism: Virtual methods, abstract classes, interfaces//Simple factory for simple

C. Vanya and ScalesVanya have a scales for weighing loads and weights of masses w0, w1, w2, ..., w grams where w is some integer not less than 2 (exactly one weight of each nominal value ). Vanya wonders whether he can

C ++ BASICS (1) data precision, forced type conversion, variable naming rules, and pig naming rulesPig C ++ BASICS (1) KEYWORDS: data precision, forced type conversion, variable naming rules Summary: 1. Most programming languages further supplement

Redis data import tool optimization process summary, redis Data ImportBackground of optimization of Redis data import tool Developed a Redis data import tool using C ++Import all table data from oracle to redis;Instead of simply importing data, the