ftell

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Input/Output stream Summary (reprint)

C + + supports two I/O, the first of which is inherited from the C language, and is an object-oriented I/O system defined by C + +.1, int getchar (void), return an integer value, or specify the value as a char variable, because the character is

Structure of BMP file parsed in C Language

Windows GDI providesTypedef struct tagBITMAPFILEHEADER {WORD bfType;DWORD bfSize;WORD bfReserved1;WORD bfReserved2;DWORD bfOffBits;} BITMAPFILEHEADER, * PBITMAPFILEHEADER;The BITMAPINFO structure of the BMP Information header is as follows: Typedef

C + + encapsulation of GLSL program objects

In OpenGL shader programming, the most commonly used may be the program object, GLSL program object creation, loading shader and other steps are fixed, if each time write the same code, feel very waste of time, So now I am in the shader learning

Get the length of any file in C (may be greater than 2GB) #define _FILE_OFFSET_BITS 64

After opening the file, use the fseek () function to move the file position pointer to the end of the file, using Ftell () to get the position pointer from the file header bytes, the number of bytes is the length of the file. However, this is also

Use the jrtplib library to transmit video files-the sender Program

Use the jrtplib library to transmit video files-the sender Program (18:09:11) Reprinted token Tags:Jrtplib RTP RTCP It Category: Other technical articles  // Jrtplib sender on ADSP-BF537 // Wangsu820@163.com2008-06-30 # Include #

[Opengl4.0] Getting started with glsl rendering language and using VBO and VAO: Draw a triangle

Previously, CG was used. Now, glsl is used and learning is required again. However, many of the two languages are the same. The following example is a simple program for drawing a triangle. Some new OpenGL features such as VBO (veretx buffer object)

File Operations and Unicode conversion on Symbian OS

This article summarizes Symbian Some file operations on the system implement the function of saving and reading tbuf and tint variables through the file, which involves conversion of Unicode and ANSI characters. Recently, I have studied file

Application method of PHPWrapper on SAE, wrappersae_PHP tutorial

The application method of PHPWrapper on SAE, wrappersae. The application method of PHPWrapper on SAEs. wrappersae this article describes the application method of PHPWrapper on SAEs. I. What is PHPWrapper from PHP Wrapper's application method on

Identify file size in C Language

  It's boring, so... File Size IdentificationThe first reaction is to use the file series functions.The Code is as follows: # Include int main () {FILE * fp; fpos_t pos; // stream pointer position fp = fopen (". /test2.txt "," rb "); fseek (fp, 0,

I/O standard library

in the past, we often encountered two types of I/O operations: fopen, fread, and fwrite with f headers, and open, read without f headers, fwrite is originally a unix I/O (implemented on Unix-like systems) and a standard I/O (implemented on many

In linux, OpenGL reads JPG, PNG, TAG texture data, and opengltag

In linux, OpenGL reads JPG, PNG, TAG texture data, and opengltag The code for actually reading images has been uploaded to my resources. The following is an example (the code is not rigorous and can be taken together ): Unsigned char * esLoadJPG

Source code: windows files are separated and merged. source code files are separated.

Source code: windows files are separated and merged. source code files are separated. #include #include #include using namespace std; // Determine whether the file contains bool FileExistsW (const wstring & fn) {WIN32_FIND_DATAW fd; HANDLE hFile =

PHP online unzipping source code

// Verify the password$ Password = "123456 "; ?> faisun_unzip "Enctype =" multipart/form-Data "onsubmit =" Return check_uploadobject (this); ">If (! $ _ Request ["myaction"]):?> faisun_unzip-decompress the ZIP file online Program V1.0

Simple fcgi Program

1. header files # Include   2. While (fcgi_accept ()> = 0) // The loop is entered here. Every time fcgi service is requested at the front end, It is cyclically performed once. Loop processing: Char * QUERY_STRING = getenv ("QUERY_STRING ")

File Operation Summary

1. Concepts and Definitions The C language introduces the concept of streaming files, that is, the files are considered to be composed of character (byte) Data Order. According to the data organization form, they are divided into ASCII files and

Code for obtaining flv video thumbnails and video time using Ffmpeg

Problem description; obtain the thumbnail and video duration of the flv video. Google found that Ffmpeg can be used to obtain video information for half a day. First, let's introduce FFMEPG. Here, I will briefly describe: FFmpeg is a complete

PHP implementation to obtain FLV file time_php tutorial

PHP implementation to obtain the FLV File time. PHP implementation of FLV file acquisition time this article mainly introduces the PHP implementation of FLV file acquisition time, this article directly provides the implementation code and use method,

Phpzip file decompression class code

Decompress the zip file using php. The code is as follows: Class zip { Var $ datasec, $ ctrl_dir = array (); Var $ eof_ctrl_dir = "\ x50 \ x4b \ x05 \ x06 \ x00 \ x00 \ x00 \ x00 "; Var $ old_offset = 0; var $ dirs = Array ("."); Function get_List (

PHP learning file processing and file Upload courseware

Mainly includes PHP file processing, file processing, file pointer-related processing functions, file control functions PHP file processing In the application of PHP files on the server, the related scope is not only the various connection and

PHP Command Line how to determine the data input with pipelines

STDIN in PHP is a blocking operation. Reading the content directly causes blocking. the following code will run until there is data input: $ datastream_get_contents (STDIN); you can operate by declaring stream_set_blocking (STDIN, FALSE): stream_set_

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