volatile int

Preprocessor (Preprocessor)1. Declare a constant with pre-processing instruction # define to indicate how many seconds are in 1 (ignoring leap year issues)#define SECONDS_PER_YEAR (* * 365) ULI want to see a few things here:& #8226;; Basic knowledge

Volatile is a type modifier (const is also a type modifier). It is designed to modify the variables accessed and modified by different threads.Role of volatile: as a command keyword, make sure that this command is not omitted due to compiler

I often see some people discuss whether the C language assignment statement is an atomic operation? Is the C ++ statement an atomic operation? Webopedia:Atomic implies indivisibility and irreducibility, so an atomic operation must be specified med

Preprocessor (Preprocessor)1. Declare a constant with pre-processing instruction # define to indicate how many seconds are in 1 (ignoring leap year issues)#define SECONDS_PER_YEAR (* * 365) ULI want to see a few things here:1) basic knowledge of

I. Volatile usage You can declare a member function as volatile. If the value of a class object may be modified in a way that the compiler cannot control or detect, for example: if it is a data structure that represents the I/O port, it is

C language testing is a recruitment Embedded System Program Personnel process must be effective. Over the years, I have both participated in and organized many such tests. During this process, I realized that these tests could provide a lot of

Preprocessor (preprocessor)1. Declare a constant with pre-processing directive # # to indicate how many seconds are in 1 years (ignoring leap year issues）#define SECONDS_PER_YEAR (* * 365) ULI want to see a few things here:1). #defineBasic knowledge

Volatile affects compiler compilation results. It is pointed out that volatile variables may change at any time. computation related to volatile variables should not be optimized to avoid errors, (VC ++ will compile and optimize the release

A variable defined as volatile means that this variable may be unexpectedly changed, so that the compiler will not assume the value of this variable. Precisely, the optimizer must carefully re-read the value of this variable every time when using

C Language Testing: 0x10 basic issues that embedded programmers should know -------------------------------------------------------------------------------- 11:18:53 from: http://www.chinaunix.net C language testing is an essential and effective

Http://c.chinaitlab.com/cc/example/200906/786657.html ------------------------------ Preprocessor) 1. Use the preprocessing command # define to declare a constant to indicate the number of seconds in a year (ignore the leap year problem) # Define

Role of volatile) A variable defined as volatile means that this variable may be unexpectedly changed, so that the compiler will not assume the value of this variable. Precisely, the optimizer must carefully re-read the value of this variable every

What is the difference between nandflash and nor flash? Nor transmission efficiency is very high, in 1 ~ The small size of 4 MB has high cost efficiency, but the low write and erase speeds greatly affect its performance.The NAND structure provides a

This test is suitable for candidates of different levels. Most primary-level candidates have poor performance, and experienced programmers should have good performance. In order for you to determine the preference of some questions, no score is

These questions are really classic!Preprocessor)1. Use the preprocessing command # define to declare a constant to indicate the number of seconds in a year (ignore the leap year problem)# Define seconds_per_year (60*60*24*365) ULHere I want to see

Embedded and C language, Embedded C Language Volatile Volatile English words mean unstable and capricious. in C language, the volatile keyword is used to declare a variable. That is to say, this variable will undergo unexpected changes and needs to

Preprocessor) 1. Use the preprocessing command # define to declare a constant to indicate the number of seconds in a year (ignore the leap year problem) # Define seconds_per_year (60*60*24*365) ULHere I want to see several things:1). # basic

16 Embedded C language interview questions 1. Use the preprocessing command # define to declare a constant to indicate the number of seconds in a year (ignore the leap year problem)# Define seconds_per_year (60*60*24*365) ULHere I want to

C language testing is an essential and effective way to recruit embedded system programmers. Over the years, I have both participated in and organized many such tests. During this process, I realized that these tests could provide a lot of useful

Embedded Development. C language interview questions Preprocessor) 1. Use the preprocessing command # define to declare a constant to indicate the number of seconds in a year (ignore the leap year problem)# Define seconds_per_year (60*60*24*365)