Your Installation must be faulty! I've a mac, in fact, I'm currently running TurboC++ on it as I type. Consider uninstalling and then reinstalling.

Download Here

Download the package just like you would download a .dmg application from the net. (i.e. Drag and dropping the application into the Applications folder) Make sure that your Applications folder is global with respect to your system. What I mean is that:

• Click on the "GO" option in the menu bar on top when in Finder.
• Select "Computer" from the drop down menu.
• Now click on your hard drive in the new window that opened.
• You will find an "Applications" folder there. Thats where your TurboC++ should be.

Note: The TurboC++ you download from the link above will be a folder inside which you will find many other folders and the application: TurboC++, which is actually DosBox. One of the important folder is TC which contains the BIN folder where your source codes will be stored.

Go to Launchpad, and start Turbo C++. Then type the following commands:

mount c: /Applications/TurboC++
<press enter>
c:
<press enter>
cd tc
<press enter>
cd bin
<press enter>
tc

It is case sensitive so be careful.

This is how it should look: