Will the actions occurring in the two terminals be treated as two processes or two threads?

My ans -
They will be considered as processes because process is nothing but an instance of a program. And each time you open something on the terminal it creates a new instance of the program.

What if we create a cpp file in our system, then open two terminals and simultaneously run the same file on both of them, what will happen? Will there be a deadlock?

My ans - Yes,Deadlock do occur right as we are trying to use a memory resource that is already being used by some one else.

Correct Me If I am wrong??