C++ changing output on console

When I’ve needed that I have just output a carriage return character, in C++ \r.

Remember to flush the output each time, e.g.

cout << "\r" << x << "% completed.       " << flush;

The spaces at the end to clear previous output on the line in case of Microsoft-like fluctuating progress.

Use the backspace character.

cout << "10%";
// ...
cout << "\b\b\b20%";