I need to read file in my program so while providing path I want to give relative paths because all files to be opened will be in some folder within current folder.
I tried this:
FILE *f=fopen("./abc/p.txt","r")
abc is folder withing current folder, but fopen returns NULL. How to do this thing?
This comes from either one of those:
. or ./abc/ is not readable or traversable
./abc/p.txt is not readable
./abc/p.txt does not exist
./abc/p.txt is a broken link
Look at errno to know what's the real problem.
this will run:
FILE *f=fopen("...\\abc\\p.txt","r");
Related
I have a bunch of .txd and .dff files that have different names, let's say, like, img1 img30 greenimg3, etc. all in the same folder. I can compile a list of these names that I want to replace (but not all the files in the folder will be replaced), but how can I replace my list of files with just one file without altering the name of the file? So it remains img1, img30, greenimg3, etcetera but with the replaced file. I hope this makes sense. I would be grateful if someone could write something that I could use, as I don't know how to code myself.
not sure if i understand corretly, but you could do this in python:
import os
folder_path = "./folder"
with open("source.file", "rb") as source_file:
source_file_content = source_file.read()
for file in os.listdir(folder_path):
with open(os.path.join(folder_path, file), "wb") as destination_file:
destination_file.write(source_file_content)
where "./folder" is the path to your folder containing all files you want to overwrite and "source.file" is the path to your file you want to overwrite with.
this script reads and writes the files as binary
my program seems to "see" only the .txt files which he creates with the fopen("file.txt","w") function. I changed the working directory and put added the file to the project, but if I create the file.txt the program can't see it. the only way is to edit the one he creates with the open function
You just have a problem concerning the current directory, it is not what you expect.
When you create "file.txt" it is created in the current directory because the path is not specified, so you can open it after because it is where the program look at by default.
{edit add}
You are under MacOS probably, if you start the program by hand from a shell like /Applications/......./prog the current directory is the current directory where you are in the shell, but if you start it through its icon etc it will depends on the installation directory
I'm working with C right now. And there's a problem. I don't know how to save a FILE in custom place. When I run *.exe file, it saves them where code is placed. So how to make it save FILEs where I want it to be?(I can input a path)
a FILE is actually a long type that addresses a path on your computer.
Whether you use linux, windows, etc, the common thing about the paths is the idea that there are relative paths or absolute paths.
From what I've understood you probably did use the relative path, and I can guess you didn't specified a path at all, but only the file name.
Notice that a file's name alone is placed relatively to the path of the program you are running.
To fix your problem you might want to give an absolute path (such as "/home/user/" on linux or "C:\Users\user" on windows [pay attention for the escaping backslash]).
You can do it by something like this:
FILE *output = fopen("/home/user/output.txt", "w");
(where "w" means writing permissions to the file at the given path).
Hope this answers your question.
I'm trying to load files into MAGMA and am running into some trouble. Ostensibly, the command load "filename";should be sufficient. I've attempted, but keep getting the same result:
>> load "filename";
^
User error: Could not open file "filename" (No such file or directory)
The file is saved in my documents folder, so I'm not sure what the issue is. Do I have to specify the path? Save the file in a particular place?
I've tried reformatting, using both txt and rtf files, so I don't think that's the issue.
For loading file in MAGMA you can place your file in installed place folder. For example: C:\Program Files (x86)\Magma
Also if your file have an special format you should mention it.
Suppose You want loading a txt file with name a. with load"a"; you face with error. You must type load"a.txt";.
Try using GetCurrentDirectory() command to find your current directory location. And then you can use SetPath() to change where MAGMA has to be to search for your file. This will fix it.
I need to run a .lua file with another .lua file.
Here is my code:
Program = io.read()
dofile(program)
I type the name of the file that I want to run correctly, but for some reason my compiler says that the file I typed does not exist. (Which it does)
Lua is case sensitive; Program is not program
Otherwise the code should work.
Try putting the full path instead of the relative path. i.e. /home/nick/script.lua