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Questions tagged [fclose]

fclose closes an open file resource, releasing it from memory and any write-locks on the file.

fclose closes an open file resource, releasing it from memory and any write-locks on the file.

It is a matching function for fopen, after read and writes have been completed. This function will release any write-locks on the file. While often unimportant for batch processes (when a process ends, write-locks are automatically released), it becomes important to release unused resources for long-running applications or background processes.

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Debugging fopen and fclose, Too many open files

I'm using Windows 7, compiling with gcc version 4.8.1. I have large, multi-threaded C program that makes a lot of calls to fopen and fclose. If it runs long enough, it starts failing to open files. I debugged using and am getting a Too…
Nathan Schmidt
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corrupted double-linked list after use fclose();

I have got problem in my program. After I use function fclose() I got error: "* Error in `./server': corrupted double-linked list: 0x000000000251a230 * Przerwane (zrzut pamięci)" If i delete fclose() function everythink is OK. This is code of…
Daniel Hornik
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fclose causes crash even after NULL check

I read a lot about fclose and I have 2 questions about it: 1) my program crashes after a call to fclose(pFile), even though I checked that Pfile isn't NULL, and change it to NULL right after fclose. (see code below) I have to mention that the crash…
almog
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Can't write string into .txt file

I'm writing a udp protocol code, one of the functions in the server side is to write the received string into a output .txt file. Here is part of my code about this problem for (;;) { fpout = fopen("out.txt","w"); if(fpout == NULL){ …
EricBkc
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Warning fopen(), fwrite(), fclose()

i have an few error in calling php file the error is Warning: fopen(beasweb/1qHdAfvx1GQPUzef4BGiEg$21J.in): failed to open stream: No such file or directory in C:\xampp\htdocs\beasweb\index.php on line 140 Warning: fwrite() expects parameter 1 to…
Derry Susilo
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C - Segmentation Fault when closing a file

I've come across a weird issue where I receive a segmentation fault when trying to close the file. Data is being written to the file correctly, could there be some sort of race condition happening between fflush and fclose? //main.c #define…
txcotrader
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Write to line we are reading from (PHP)

Lets say we have a file opened with fopen. Is it possible to write to the same line we are reading from? Basically im working with csv files, and i need to write values to the lines which dont have a second, or first value.…
Molnár Márk
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should I close a file in PHP's __destruct() method?

In my script I need an open stream to a CSV file and my application will read single, many or all of its lines depending on different request, and store them in an array! when and if we reach to the point that all lines been read and stored, the…
Ali
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fopen does not work properly and I get segmentation fault when I use fclose

I am new c-programmer.I am writing a small student database. I have an array of structs I would like to write it to file. Till now the program works fine. I can print out the data saved in the array called db (abbreviation of database). In order to…
amitakCs
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How I can write a html code (templete) to a html file by php?

How I can write html code (not executable) to a file by using php filesystems. For example I want to put my html page template which includes DOCTYPE, HEADER, BODY BLOCK, FOOTER etc.
Ahmad Raza
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Memory and File size issue with writing 12,000 records from mysql table to csv file using fputcsv() function

I have a database of 12,000 records which I want to write to csv file I have tried below php code, but after file size becomes 980kb data starts removing and file size starts decreasing thereafter. Data is successfully fetched from mysql table.…
Sashant Pardeshi
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Undefined method 'close' for main:Object (NoMethodError) in Ruby

filename = ARGV.first txt = open filename puts "Here's your file #{filename}:" print txt.read puts "Type the filename again: " file_again = $stdin.gets.chomp txt_again = open file_again print txt_again.read close(txt) close(txt_again) The…
Prashanth Chandra
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Program quits while changing characters?

I am trying to make a program that converts (Đ,Š,Č,Ć and Ž) Serbian(Latin) charecters to (D,S,C,C,Z) so my TV can recnognise them btw. NO IT's NOT A ENCODING ERROR, YES MY TV IS RUNNING THE LATEST SOFTWARE. So I decided to make this command…
nik123
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c - fclose() causes a crash

I have a problem in this code, it executes successfully until reach fclose(fp) statement, it crashes. void read_file(const char *filename) { FILE *fp; int num, i=0; fp = fopen("numbers.txt","r"); if (fp == NULL) { …
Tasnim Zuhod
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How do i write contents of textarea to file in php?

I am working on my first PHP script which is supposed to upload a file to the server, show the contents of the file and then save any changes to the file. Here is the code:
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Rajbir
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