fopen() returning a NULL pointer, but the file definitely exists

Question

The code I have is as follows:

FILE *txt_file = fopen(\"data.txt\", \"r\");
if (txt_file == NULL) {
    perror(\"Can\'t open file\");
} 

Th

Answer 1

My problem was that I had a file filename.txt and I didn't realize that in reality it was filename.txt.txt due to windows not showing the extension.