Escape sequence f - form feed - what exactly is it

Question

f is said to be the form feed   t is a tab   a is a beep   n is a newline  What exactly is a form feed -  f  The following program   include  lt iostream gt  int main        std  cout  lt  lt   hello fgoodbye   lt  lt  std  endl        prints hello then a female sign  an upside down holy hand grenade   and then goodbye all on one line

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From wiki page     12  form feed   f   L   to cause a   printer to eject paper to the top of   the next page  or a video terminal to   clear the screen    or more details here     It seems that this symbol is rather obsolete now and the way it is processed may be    implementation dependent  At least for me your code gives the following output  xcode gcc 4 2  gdb console    hello     goodbye

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It skips to the start of the next page   Applies mostly to terminals where the output device is a printer rather than a VDU

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Although recently its use is undefined  a common and useful use for the form feed is to separate sections of code vertically  like so    from http   ergoemacs org emacs emacs form feed section paging html

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It s go to newline then add spaces to start second line at end of first line  Output    Hello      Goodbye

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If you were programming for a 1980s-style printer  it would eject the paper and start a new page  You are virtually certain to never need it   http   en wikipedia org wiki Form feed

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It comes from the era of Line Printers and green-striped fan-fold paper   Trust me  you ain t gonna need it

[c++] Escape sequence \f - form feed - what exactly is it?

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