Hello! I've been trying to learn basic programming in C++ and I'm into reading from and writing to external files but I'm having some issue with the Programming Exercises.
I'm supposed to write a program that takes input from a file, so I tried creating a file and opening it in the program but my check always says failed to open and the program ends.

So I'm wondering what I could be doing wrong. Any suggestions and tips will be appreciated.

Just to note: I'm using Problem Solving With C++ by Walter Savitch and Cppdroid(android IDE).