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Document directory Do... while (0)-usage (transfer ...)   Reprinted from: http://blog.ednchina.com/fpga2006/34658/message.aspx  # Define macro_name (para) do {macro content} while (0)  The following reasons are summarized:     1. Empty macro

Benefits of using do {} while (0) in macro definition (reprinted), dowhileBenefits of using do {} while (0) in macro definition   #define MACRO_NAME(para) do{macro content}while(0)The following reasons are summarized: 1. the empty macro definition

Benefits of using do {} while (0) in macro definition #define MACRO_NAME(para) do{macro content}while(0)The following reasons are summarized: 1. the empty macro definition avoids warning: # define foo () do {} while (0) 2. An independent block

Benefits of using Do{}while (0) in macro definitions#define MACRO_NAME (para) Do{macro content}while (0)Format, summed up the following reasons: 1, empty macro definition to avoid warning: #define FOO () do{}while (0) 2, there is a separate block,

How to do while (0) in Linux kernel using C language Why do while (0? Because it is indeed wonderful, and the implementation in the Linux kernel is quite good, let's look at the relevant code in the kernel: #define db_error(fmt, ...) \ do { \

In C ++, there are three types of loop statements: For, while, and do... while, but in general applications for loop, we may use for and while to have more, do... while is relatively not valued.However, when I recently read the code of our project,

# Define macro_name (para) do {macro content} while (0)The following reasons are summarized: 1. the empty macro definition avoids warning: # define Foo () do {} while (0) 2. An independent block exists, it can be used to define variables for

Welcome reprint, Reproduced please specify the original address: http://blog.csdn.net/majianfei1023/article/details/452468650. GuidanceThe first time I saw do{...} while (0) is when learning libevent, see there are many similar#define Tt_uri (Want)

# Define macro_name (para) do {macro content} while (0) format summarizes the following reasons: 1. Empty macro definition avoids warning: # Define Foo () do {} while (0) 2, which has an independent block that can be used for variable definition and

If you are a C programmer, you must be familiar with macros, they are very powerful, if used correctly can make your work more effective. Then, if you're defining macros and you're not checking them out at random, then they can make you mad and

Linux Kernel and some other open-source code often encounter such code: do{ ...}while(0) Such code is not a loop at first glance. Do... while has no meaning at all on the surface, so why should we use it like this? In fact, do {...}

The Linux kernel and some other open source code often encounter such code: Do { ...} while (0)This code is not a loop at a glance, do. While the surface is meaningless here, why use it so much?In fact, do{...} while (0) is much more useful than

The Linux kernel and some other open source code often encounter such code: Do{...} while (0) This code is not a loop at a glance, do. While the surface is meaningless here, why use it so much?In fact, do{...} while (0) is

The Linux kernel and some other open source code often encounter such code:Do{...} while (0)This code is not a loop at a glance, do. While the surface is meaningless here, why use it so much? In fact, do{...} while (0) is much more useful than

From: http://blogread.cn/it/article/5907 Linux Kernel and some other open-source code often encounter such code: do{ ...}while(0) Such code is not a loop at first glance. Do... while has no meaning at all on the surface, so why should

You is a C programmer, you must is familiar with macros. They is powerful and can help you ease your work if used correctly. However, if you don ' t define macros carefully, they could bite you and drive you crazy. In the many C programs, you could

do{...} The meaning and usage of while (0)On October 9, +, in C language, language learning, by sponge The Linux kernel and some other open source code often encounter such code: do{... } while (0) This code is not a loop at a glance, do. While the

In C ++, there are three types of loop statements: For, while, and do... while, but in general applications for loop, we may use for and while to have more, do... while is relatively not valued.However, when I recently read the code of our project,

Why does while (0) wonderful? Because it's really good, and it's pretty good to implement in the Linux kernel, let's look at the relevant code in the kernel:#define DB_ERROR (FMT, ...) do { fprintf (stderr, "(Error):"); fprintf (stderr, FMT, #

Why does while (0) wonderful? Since it's really good, and it's pretty good to implement in the Linux kernel, let's look at the relevant code in the kernel:#define DB_ERROR (FMT, ...) do { fprintf (stderr, "(Error):"); fprintf (stderr, FMT, # #