If the file does not exist, fopen returns NULL. If the file exists, its contents are overwritten. If the file does not exist, it will be created.
I edited my post with new code. I tried as you said but still not working. Nothing is written to new file. I put some string inside the while loop and it showed that while loop worked only once.
Keep playing with it. Like Jonathan says in his comment on your post, you have quite a few issues with the code. Also You need to probably use sizeof buffer instead of I wish I could get free programming when I get too much work to do. Why use OS-specific functions when there is a perfectly platform-independent way of doing it?
Here's a version that uses just a single header file and is portable to any platform that implements the C standard library. The glibc reference has this to say: In general, you should stick with using streams rather than file descriptors, unless there is some specific operation you want to do that can only be done on a file descriptor.
If you are a beginning programmer and aren't sure what functions to use, we suggest that you concentrate on the formatted input functions see Formatted Input and formatted output functions see Formatted Output. If you are concerned about portability of your programs to systems other than GNU, you should also be aware that file descriptors are not as portable as streams.
You can expect any system running ISO C to support streams, but non-GNU systems may not support file descriptors at all, or may only implement a subset of the GNU functions that operate on file descriptors.Write-back support.
UBIFS supports write-back, which means that file changes do not go to the flash media straight away, but they are cached and go to the flash later, when it is absolutely necessary. How can I write a little piece of text into attheheels.com file? I've been Googling for over hours, but can't find out how to do it.
fwrite(); has so many arguments, and I don't know how to use it.
What's the easiest function to use when you only want to write a name and a few numbers to attheheels.com file. An A-Z Index of the Bash command line for Linux.
alias Create an alias • apropos Search Help manual pages (man -k) apt-get Search for and install software packages (Debian/Ubuntu) aptitude Search for and install software packages (Debian/Ubuntu) aspell Spell Checker awk Find and Replace text, database sort/validate/index b basename .
Table of Contents Chapter 1: Quick Introduction to Linux What Linux is? Who developed the Linux? How to get Linux? How to Install Linux Where I can use Linux?
What Kernel Is? What is Linux Shell? May 24, · The Linux File Hierarchy Structure or the Filesystem Hierarchy Standard (FHS) defines the directory structure and directory contents in Unix-like operating attheheels.com is maintained by the Linux Foundation. In the FHS, all files and directories appear .
The Linux File Hierarchy Structure or the Filesystem Hierarchy Standard (FHS) defines the directory structure and directory contents in Unix-like operating attheheels.com is maintained by the Linux Foundation.
In the FHS, all files and directories appear under the root directory /, even if they are.