Aescleal wrote: so that when you finish typing the new object file is ready to link. I suspect the overhead would be somewhat expensive. Personally I have no problem typing (some of) the source, running a compilation, then fixing all the syntax errors, before moving to the next piece of code. It's time for a new signature.

PROBLEM SOLVED thank you everybody for your time I had to start EMPTY CONSOLE project and add my C++ code file to that. NO pricompiled headers. (I don't even know what they do)

Like the quote :laugh: To my shame I must say it actually took me a second look to get it. My advice is free, and you may get what you paid for.