C++

1. About return 0 in the main functionIn the C99 standard, the return value type of the main function must be int so that the return value can be passed to the program's activator (such as the operating system). If the return statement is not

2.1Use enum to do numerical calculationThe following two articles describe template metaprogramming, an enum being the most important basic tool http://www.codeproject.com/Articles/3743/ A-gentle-introduction-to-template-metaprogramming https://www10

BackgroundC + + is the main language used by Google's open source projects, although Google Code is yellow. C + + is a powerful language that adds to its complexity. In order to let the code by other programmers understand, reduce the possibility of

StdAfx.hVC project inside often see stdafx.h this header file, before also did not pay special attention, but this file with bad often error, so Google a bit, finally is to figure out ...StdAfx's English is all called: Standard application Framework

Referring to the previous virtual function, multiple inheritance is also divided into the problem of having no virtual function coverage; There are different situations in the virtual tableMultiple inheritance (no virtual function

1. Usage of member function pointers1#include 2 using namespacestd;3 class Base4 {5 Public:6 intTestintLhsintRHS)7 {8cout"Base Test"Endl;9 return 1;Ten } One }; A classDerived Public Base - { - Public: the

High-precision operations are easy to implement in Java, just like A + b problem, because Java provides the appropriate class libraries and APIs, but there are no ready-made classes and APIs for you to call in C + +. In the spirit of "hands-on,

#include #includestring>using namespacestd;classanimal{ Public: Animal (); Animal (stringname); stringmouth; voideat (); voidsleep (); voiddrool (); stringname;};classPig: Publicanimal{ Public: Pig (); Pig (stringname); voidclimb ();};classTurtle:

C + + STL list traversal Delete crash error usage oneThe following usage will crash in for, analyze the first for loop it=0, and it becomes 17891602 when t.erase (it) executes.Indicates that it can no longer operate as an iterator, and will

Title Description: Peking University performed an average credit score point system (GPA) for undergraduates. The students ' actual scores will be calculated according to the different credits of different disciplines.The formula is

To convert the number of seconds to any time format, you can use a function timespan of C # to see an example:TimeSpan ts = new TimeSpan (0, 0, 3661);Richtextbox2.text = ts. Hours + "hours" + TS. Minutes + "minutes" + TS. Seconds + "seconds";You can

For the declaration of a generic classwhich uses the type parameter's constructed type, such as list, which is called an open constructed type (open constructed type)A constructed type that does not use a type parameter, such as List, is called a

Gets the full path of the current process, including the file name (process name).String str = this. GetType (). Assembly.location;Result:x:\xxx\xxx\xxx.exe (. exe file in the same directory as +.exe filename)Gets the full path of the new process

Some DLL functions require callbacks, so when we call them in managed code, we must first create a callback function and then pass the pointer of the function as a parameter to the DLL function.The following is an example of the EnumWindows function,

Three main pillars of OOP: (1) Encapsulation (2) Inheritance (3) polymorphismEncapsulation in C #, here is a description of static classes and properties.Static class: A static class that cannot be instantiated, is closed, cannot derive a type from

In Windows timed jobs, there are a number of different types of job scheduling, such as Windows Services and Windows Forms, each with its own benefits. Now let's introduce the use of plug-ins in the form of timed jobs.1, with quartz.net plug-in,

In CSDN's blog post saw the Muziduoxi article: http://blog.csdn.net/muziduoxi/article/details/5386543 Although the method mentioned inside did not solve my problem, But I also think of the method according to the methods used in the present, so I

1, Msil:microsoft Intermediate Language Microsoft intermediate language2. Storage location for. NET Framework:%windir%\microsoft.netStarting with the. NET Framework 4, the default location for the global assembly cache

Number to String:Platform-independent conversions in the C standard library are only int sprintf (char *buffer, const char *format, [argument] ...); is located in the header file stdio.h.#include int main () {int num = 8;char numstr[128];sprintf

extern "C"When using C functions in a C + + environment, it is often the case that the compiler cannot find the C function definition in the OBJ module, which causes the link to fail, how should it be resolved? The answer and analysis: the C + +