Why tellg is returning negative value?

Question

I was using tellg in my program and if i am giving the output of that of that tellg it giving the negative value.
https://code.sololearn.com/cvff45BaMqYr/?ref=app

Answer 1

Because file doesn't exist. So you can't open. That's why returned -1.

Answer 2

~ swim ~ now done thankx

Answer 3

AJ #Level 20 End Day so any corrections