vs2008,vs2015 cannot read files: weird behaviour - c++

Question

I'm having a very weird behaviour in Windows 10 enviroment using both VS2008 and VS2015 when I try to read a file using ifstream.
I'm using the following simple code:
#include "stdafx.h"
#include <fstream>
#include <iostream>
#include <string>
int main()
{
std::ifstream ifs("C:\\Users\\dd\\Desktop\\test.txt");
if(ifs.is_open())
{
std::string line;
while(std::getline(ifs,line))
{
std::cout << line << "\n";
}
}
else
{
std::cout << std::strerror(errno) << "\n";
}
return 0;
}
Obviously the file exists.
When I try to read the file .txt I get:
Permission denied
I run Visual Studio as Administrator and I have the permission to read the file because I am able to open it using Notepad++.
If I change the file extension, for instance .test, I am able to read the file content correctly and everything works as expected.
I uninstalled and then reinstalled VS2008, VS2015 and all C++ Redistributable, but nothing changed. Any help is greatly appreciated!

Answer 1

Perhaps your file isn't named test.txt. Did you check that your file is really named test.txt and not test.txt.txt (with a hidden extension)?
Try to list files in command prompt to see what the real file name is:
cmd>
cd C:\Users\dd\Desktop\
dir | findstr test
Onother possibilities:
test.txt could possibly use similarly looking letters from another
language (in your code or in actual file name).
not properly quoted slashes in your code (e.g. C:\Users\\ instead of C:\\Users\\dd\\). Try to change to forward slashes.