Objective C to C++

Hey all,
I have an iphone game made using cocos2d and objective C. Now I’m porting it using airplay and cocos2dx. Is there some quick way to convert Objective C code to C**. Anyone who might have made a parser or anything. I don’t want to convert each line of objective C to C** manually.

Thanks

oops, we convert the program language line by line manually so far, about 600 lines of code per man-day.