need to modify existing code which is in c to enable bidirectional communication

Hello I have over 17 years of experience with C/C++ and Windows Desktop application development. Could you send code to update? Thanks

I am very proficient in c and c++. I have 18 years c++ developing experience now, and have worked for more than 7 years. My work is online game developing, and mainly focus on server side, using c++ under Linux environment. I made many great projects using c++, for example, I made the tools which could convert java codes into c++ scripts, of course garbage collection included, this was very similar to a compiler, and was very complex. I also made our own mobile game using c++, I can show you the demo of client, if you like. I am very proficient in java also. I have a very good review on Freelancer.com, I never miss a project once I accept the job, you can check my review. Trust me, please let expert help you.

Hi, If I could I'll do it for free (... I'm new in freelancer). I'm a highly skilled and experienced software engineer. My area of expertise is broad ranging from low (BSP level) to very high layers (applications, GUI, networking, ...). Give me a try.

I can code it in c programming and use visual c++ as you need it in windows. What do you want to send in bidirection?Is it text?