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4.2 Declaring the exported function There are two ways to declare a function in a DLL: one for the 4.1-section example, plus __declspec (dllexport) in the function declaration, which is no longer illustrated here; another way is to use the module

string format definition printf () function The printf () function is a formatted output function that is generally used to output information in a prescribed format to a standard output device. This function is often used when writing programs.

This article is an example of a simple multithreaded mutex in Linux analysis, the need for friends can refer to the following copy code code as follows: #include #include pthread_mutex_t device_mutex; int count=0; void Thread_func1 () {  

  This article mainly describes the PHP sprintf and printf function usage difference analysis, need friends can refer to the following Here's an example: rounding the two-bit code after the decimal point is as follows: explanation%0.2f

Python Files support Chinese #-*-Coding:utf-8-*- Execute shell command From subprocess import Popen, PIPEdef run_cmd (cmd):#Popen Call Wrapper.return (code, stdout, stderr)Child = Popen (cmd, stdin = PIPE, stdout = PIPE, stderr = PIPE, Shell =

Method of bulk compressing picture size under Linux system Now the mobile phone users are very large, for mobile phone users have to consider the traffic, but the mobile network bandwidth is small, how the image compression on the internet is a

When there is an exception to the C API function in Linux, generally will errno variable (need include errno.h) to assign an integer value, different values to represent different meanings, you can see the value of the reason for the error, in the

Use the counter code directly in the PHP file: $countfile = "Num.txt"; Defines that the file written by the counter is num.txt under the current directory, and then we should test whether the file can be opened if ($fp = fopen ($countfile, "r+"))

The system must specify an ID value when it establishes an IPC communication, such as Message Queuing, shared memory. Typically, the ID value is obtained through the Ftok function. The Ftok prototype is as follows: key_t Ftok (char * fname, int id)

1. Function description Pipe (Establish pipeline): 1) header file #include 2) define function: int pipe (int filedes[2]); 3 Function Description: Pipe () creates the pipe and returns the file descriptor from the parameter Filedes array. Filedes[

Linux Bottom file #include function definition int execl (const char *path, const char *arg, ...); Function description Execl () where the suffix "l" represents the list is the meaning of the argument lists, the first parameter path

Introduction A condition variable is a mechanism for synchronizing a global variable shared between threads, consisting mainly of two actions: one thread waits for the condition variable to hang (the CPU is no longer in use), and another thread

#include #include #include #include #define MAX 10 pthread_t thread[2]; pthread_mutex_t Mut; int number=0, I; void *thread1 () { printf ("Thread1:i ' m thread 1n"); for (i = 0; i { printf ("Thread1:number =%dn", number);

In all NT systems, there are several ways to get the login user's password. I know three ways to achieve this. 1.hook Winlogon in several functions, the network also has this type of program, called Winlogonhijack Project in Rootkit.com has