I have seen many people who have used std::endl or ‘n’ at the end of their output in computing olympiads, even though a newline is not needed.
For example, they often write
cout << "Hello World" << endl;
or
cout << "Hello Worldn";
instead of
cout << "Hello World";.
Can anyone explain why this is? Like is it just a habit or is an endline actually needed?
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