printf("%d %d %d %d %d %d",i++,i–,++i,–i,i);
Just skip this question. There is no point in solving these question. They depend on compiler for answer. https://discuss.codechef.com/questions/128555/increment-operator-behaviour/128565
Are you sure you know the difference between “Title” of question and Question itself?
I would like to suggest you to go through this article and next time differentiate between title and question.