C

  I. Review and comment of the previous Article   1. In the previous article, the hello world Program was analyzed in depth.   2. What is a complete program? What are the components? Please review it!   3. I talked about main. This is the most

    # Include # Include # Include     # Define IsMan (name) pr_value (# name, name) // The key point is # name, which creates "\" "+ name +" \ "to pr_value # Define WANGYONG 1 # Define YONGXIN 2   Void pr_value (char * name, int type) { Switch

  Recently I have been reading a book on C language in depth. I feel that the relationship between pointers and arrays is quite understandable. Sometimes someone writes a long article about pointers and arrays. Intuition tells me that it is a good

In C language programming, we will encounter some functions with variable parameter numbers, such as printf ():Int printf (const char * format ,...); In addition to the fixed format parameter, the number and type of parameters that follow are

Previous: http://www.bkjia.com/kf/201112/115217.html 5.3. bind () --- On which port?Once you have a socket, you may need to associate the socket with a certain port on the machine. (If you want to use listen () to listen to data on certain ports,

Previously, we have compiled a code http://www.bkjia.com/kf/201201/116006.html. now we have added a bit of code for this type of operating system! We all know that fork () is available only in Unix/Linux operating systems! Because they do not have a

I. Development Process of advanced language programs1. analyze the problem and create a model2. Presentation Model3. Edit the source program4. Program compilation (or translation) and linkThe program written in advanced languages is called the

What is a function?A function is a self-contained unit of program code used to complete a specific task.Why use functions?First, you can skip writing duplicate code. If a program needs to use a specific function multiple times, you only need to

Assertions can be used as a powerful debugging method or an error diagnosis during program running.However, assertions are not suitable for various places. server software and embedded programs are generally not applicable. Assertions force the

When looking at the POCO network library, a singleton mode is implemented, and the feasibility of DCLP is mentioned. Check it out,Found this article. The original text is too long, and the meaning is roughly summarized as follows. Singleton is

1. if statement. If statementIf (x % 2)Y + = x/2;If the expression in the brackets is true, run the y + = x/2 Statement.. If else statementIf (x % 2 = 0)Y + = x/2;ElseY + = (x + 1)/2;If the expression in if is true, execute the statement after if.

1 # include 23 # define MAX45 # define MAXIMUM (x, y) x> y? X: y6 # define MINIMUM (x, y) x 78 int main ()9 {10 int a = 10, B = 20;1112 # ifdef MAX13 printf ("\ 40: The larger one is % d \ n", MAXIMUM (a, B ));14 # else15 printf ("\ 40: The lower

Linux Kernel: it manages computer hardware and provides APIs in the form of C functions.Standard C Language Library: An application library built on the API, encapsulates some low-level APIs, and provides more efficient C functions for upper-layer

UNIX APIs provide the most basic IO functions and are declared in fcntl. h unistd. h. (Fcntrl fd control)The application uses file descriper (file descriptor) to interact with the kernel.These functions are called unbuffered I/O.In UNIX, everything

1 /*2. Question: How old are five people sitting together? He said he is two years older than 4th. Asked 4th people about the age, he saidThree or three people are two years old. Ask the third person, and say that the person is two years older than 2

Timing A program is too important for programmers. The clock () on windows is not accurate enough, and the precision is only 10 ms, which is really sad. I have studied how to use C, C ++ timing functions in windows.It mainly refers to the use of two

The most significant improvement of Lua 5.2 was "yieldable pcall and metamethods ". This requires us to overcome a difficult problem: how to correctly call yield back to resume in the C function call. Resume is always initiated through a lua_resume

I. Functions in the Character Processing Library# Include Function prototype: int f (int c)Function Description: the C language defines whether to process character operations, including whether it is a number, letter, print character, hexadecimal

Prince: volatileDescription: each variable is the same as its name. Sometimes it is from the heart, and sometimes determined by external factors. Only volatile variables are like one, therefore, he gained the reputation of a prince.Role: volatile

I have five cards on my hand and five cards on the stack. Now I want to discard the n (0 Train of Thought: I will give you one by one each kind of case and then judge (children who do not know how to play cards cannot afford to hurt this