Answer 1

gotoxy function from <conio.h> header file (non-portable and not supported by GCC. There are other libraries by which you could get the same result by including them into your projects like Curses) is responsible for relocating the cursor on your console or terminal at a particular coordinate according to parameters passed to it. Because conio.h is no longer supported by modern compilers some people implement their own function to get the same result.

Worth reading
[https://www.quora.com/What-is-gotoxy-function-used-in-c]