top-level constAs we ' ve seen, a pointer is an object and can point to a different object. As a result, we can talk independently about whether a pointer be const and whether the objects to which it can point be Const. We use the top-level const to
If error C3646 is present in the program, then this error may be caused by a number of problems, and this article will analyze a variety of errors and corresponding workarounds.On the official MSDN website, complier Error C3646 is defined as unknown
[C ++] auto type specifier
We often assign the expression value to the variable, which requires that the type of the expression be clearly known During Variable declaration. Sometimes it is very complicated. The auto type specifier is introduced in
Question:Compile a function, return the difference between the maximum and minimum values in a double array, and test the function in a simple program.It's easy to have no sense about the question, but it's just a bit confusing, because the answer
When using Keil to write programs, inadvertently found a particularly simple and easy to ignore the problem, compile the following error:
Error: #77-D: This declaration has no storage class or type specifier
According to the error point, found
Jency LeeLinks: http://www.cnblogs.com/Jency/articles/C_Cplusplus_define.html1. Simple define Definition #define MaxTime + A simple maxtime is defined, which represents 1000 if you write in the program if (i Compiler replaces maxtime with 1000
1) # define is a pre-processing command. It is a simple replacement during compilation and pre-processing, and does not check the correctness. It does not mean that it is correct or not, possible errors are detected and reported only when the
Http://msdn.microsoft.com/library/dotnet/cpguide/cpconstandardnumericformatstrings.htm (This is the connection URL)
Standard Numeric Format Strings are used to return commonly used Numeric string types. They take the "form X0, where X is" the format
Difference between typedef and # define
The benefits of renaming constants using macro definitions: The program is easy to implement and easy to maintain and modify; 1) # define is a pre-processing command that performs simple replacement during
1, define--(no parameter macro definition)Usage: The general form is: #define Identifier string(1) "#" means that it is a pre-processing command, usually "#" is the pre-processing command;"Define" defines the command for the macro; "identifier" is
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