, if you asked a question would you like the kind of responses you have given?
The reality is that Turbo C++ is still widely used.
All the compiler preferences are in a little text file that you can set to either roam with your projects or appear in the install directory. If I remember correctly, it has a name like "turbo.tp" or "turbo.tc" or something like that.
Find it, and rename it
to something else (like "save.turbo.tp"), then run the IDE. If you found the right file your IDE will use the defaults and you can delete the renamed file.
You should try to get the old Borland manual for your compiler. (These days, you usually get a Help file of the manual with the compiler, but even if you didn't, if you can get the paper-bound book it is worth it.)
However, you really ought to download a modern compiler. The old Turbo C++ compilers are pre-standard C++, meaning that they do not properly support the current C++ standard. Unless you have some good reason to use it (like a requirement for school or work, for example, or working on old 16-bit systems, like DOS), you would be much better off getting something up-to-date. Check out this thread for good pointers: