c - Why does 'fopen' return a NULL pointer? - Stack Overflow
May 13, 2011 · I'm working on a simple file splitter/merger program in the C programming language. The problem is, for some reason fopen returns NULL, and because of that, my program is crashing at the …
winapi - How to open a "nul" file? - Stack Overflow
Jan 23, 2013 · To open a "nul" file, you simply specify "nul" when you call CreateFile. It only looks weird because hardly anyone ever uses that file name. (I don't see it used nearly as often as I see …
c - Unable to open a file with fopen () - Stack Overflow
Nov 17, 2009 · I've been trying to open a file and output text, but I keep getting errors. So I thought I would start at the very beginning and just try opening the file. This is my code: #include <stdio.h&...
Why I am facing this error "fatal: could not open '/dev/null' for ...
Mar 12, 2023 · "fatal: could not open '/dev/null' for reading and writing: No such file or directory" I tried to solve this by changing the value HKEY_LOCAL_MACHINE -> SYSTEM -> ControlSet001 -> …
What happens when I open a text file and it's equal to NULL?
Dec 3, 2022 · We recently learned opening files in the uni and the prof didn't tell us this. So I open a text file and do a check whether the file is equal to NULL or not. What if it is equal to NULL? It means t...
java - Error message displayed when opening Eclipse: "An error has ...
Jun 21, 2021 · Error message displayed when opening Eclipse: "An error has occurred. See the log file null" Asked 10 years, 2 months ago Modified 2 years, 5 months ago Viewed 146k times
Does fopen return NULL pointer if file is already open?
May 1, 2018 · I was assuming that fopen returns NULL pointer if file is already open. But it looks fopen does not return NULL in case file is already open in "w" mode. Below is the code that I used to ...
Why does fopen() fail to open /dev/null but open() succeeds?
May 30, 2024 · 5 On Godbolt, opening /dev/null for writing fails when you use fopen but succeeds when you use open, and I have no idea why.
If file pointer is null, do I have to use fclose()? (C) - Stack Overflow
Sep 20, 2015 · If f is NULL, then the file was never opened to begin with, so it does not need any closing. Even if the file somehow needed closing, the solution could not possibly involve passing …
BCP error "Unable to open BCP host data-file" - Stack Overflow
The file does not exist. (make sure the file is where you expect it to be) The file is already open by some other app. (close the other app to release the file) For 1) and 2) - remember that paths are relative to …