This just makes me mad every time.

I have a friend who asks for help in coding and just reads and copies my whole code, doesn't even understand what's going on and just copies the whole damn thing (the variable names too). Also, says I don't know how to do it properly because I indent the code and he wants it all in a single line.

If there is any error in the code, just tells me that there is a problem and does nothing and keeps nagging me if I solved the problem every 2 minutes.

Once I solve the problem, just copies the stuff again and then brags to others about the code and takes all the credit.

After bragging, if someone asks him for help he just tried to match the code line by line and worry by word. And tells them their code is wrong if they are using a different method of solving the problem and asks them to do it like him.

Being an introvert, I don't go shoving my stuff in others faces and criticising their code.

But the professor knows I am good, so that works for me. :)