Cannot read in a txt file using ifstream

Question

I am trying to read in a basic txt file, but I think the programming is not detecting the txt file. Here's my code.

int main() {
   ifstream in;
   in.open("testing.txt");
   if (in.fail()) cout << "fail" << endl;

   return 0;
}

The program is printing out fail. I created the txt file by right clicking the project and adding a new empty file. I am completely stuck, so I would appreciate any help.

Answer 1

As from QT Creator's documentation, you can change the working directory where your program should be executed in the project run settings :

If your file exists in a different path than the default (which is where QT Creator builds the executable), you can set it there.

I created the txt file by right clicking the project and adding a new empty file.

That creates the .txt file at your project main path, not where the executable is build actually.