turbo c++

to use borland turbo c++ for dos from 1987 

you likely need to install windows in bootcamp or mess around with wine bottler emulation

but if you just wish to compile c++ then

try reading

https://www.macobserver.com/analysis/5-ways-to-write-c-code-on-your-mac/

You don’t. This is a very old program written for windows, not the mac. I doubt it would even run in a recent version of windows.