general methods for file content replication:
Open up a space, constantly read the contents of the file and write to another file, this method is safe, generally within the maximum range allowed by the type is safe, the disadvantage is that
C language File read and write operation summary
C Language File operation
I. Reading and writing of standard documents
1. Open the file
The open operation of the fopen () file means that the file specified by the user is allocated a filename in
Standard I/O library common functions use1.fopen functions: Input and output for files and terminals.#include FILE * fopen (const char* filename, const char *mod);2.fclose function: Closes the specified file stream stream.#include int fclose (FILE
Operations related to getting file size in C LanguageOperations related to getting file size in C Language
Description
Generally, you want to assign all the data from the file to an array or a pointer, and then perform related data processing,
I've written before, "using the WinHTTP interface for HTTP protocol get, post, and file Upload," which describes how to use the WinHTTP interface to implement HTTP GET, post, and file upload capabilities. I later found out that a lot of people were
1, MATLAB file operation mainly has three steps: first open the file, then read and write to the file, and finally close the file.2, Fid=fopen (file name, open mode)
' R '
Read-only, file must exist (default open mode)
Common File operation functions in php. Summary of common functions used for php file operations, including file read/write, creation, viewing file attributes, file deletion, and other file operations. Summary of common functions used for php file
Http://blog.sina.com.cn/s/blog_61437b3b0102v0bt.htmlhttp://blog.csdn.net/chenwk891/article/details/8776479 in c\c++, the file operations are implemented by the library function, mainly divided into two types of read and write operations, the
1.fseek
Function Prototypes:
Copy Code code as follows:
int fseek (FILE * stream, long int offset, int origin);
Parameter description: Stream, file stream pointer, offest, offset, Orgin, original (beginning position). The
The language file system is called a stream file (stream), text stream (body file), binary stream (binary file) buffer and non-buffered file sequence operation file and random operation file sequence file: Read/write the K block before
1、fopen() fwrite() fclose() fiel_put_contents1) fopen (path,′xx′) Open a file xx=r read-only open and point the pointer to the head xx=r+ read-write mode to open xx=w write, and empty the contents of the file, the pointer executes the head, does not
Mathematical functions1.abs (): Absolute value$abs = ABS (-4.2); 4.2 Numeric Absolute number2.ceil (): Into a method to take the wholeecho ceil (9.999); 10 floating point number in one rounding3.floor (): Rounding off the Rounding methodecho Floor (9
Description of the problem; get the thumbnail and video time length of the FLV video
Google for half a day found that you can use FFmpeg to get some information about the video, first introduce FFMEPG
Here's a simple: FFmpeg is a
1. header file
#include
2, while (Fcgi_accept () >=0)//Here into the cycle, the front desk every request once fcgi service, on the cycle once
In-loop processing:
Char *query_string=getenv ("query_string");
3, from the query_string to resolve the
3. Random reading and writing of files
Sometimes the user wants to read the information directly in the middle of the file, it is obviously inconvenient to read and write in the file in order to start from the file header until the required file
To save the custom data File, you need to save the File and read the File, that is, File IO processing; For cocos2d-x we can through FileUtils: getInstance
To save the custom data File, you need to save the File and read the File, that is, File IO
C Language of the file processing related functions, in fact, also used more, this time in writing a file processing class, the first thought of using a file pointer to operate, but the sad reminder is a long time did not cross the file operation
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