Clear multiple lines

Question

Is it possible to clear multiple lines in C and keep others for example.

Code:

Displaysenrsordata loop printf("This info stays"); <-stay on screen printf("This info stays"); <-stay on screen printf("This info Refreshes"); <-update redraw printf("This info Refreshes"); <-update redraw printf("This info Refreshes"); <-update redraw

Essentially I want to have some text to stay at the same place and redraw the updating data without clearing the whole screen.

You need to specify your environment (Unix terminal/Windows console app/...) as this is beyond ISO C. — ninjalj
– ninjalj, Commented Dec 15, 2013 at 13:27

Chris Page · Accepted Answer · 2013-12-16 06:50:28Z

If you are working on linux then use ncurses.

Example:

#include <stdio.h> #include <ncurses.h> int main (void) { int a = 0; initscr (); printw("This info stays \n"); printw("This info stays\n"); curs_set (0); while (a < 100) { mvprintw (3, 4, "%d", a++); mvprintw (3, 8, "%d", a++); mvprintw (3, 12, "%d", a++); refresh (); sleep (1); } endwin(); return 0; }

alk · Accepted Answer · 2013-12-15 11:48:03Z

You can overwrite the current line be printing out a \r, or the last character on the current line by printing a \b.

Babken Vardanyan · Accepted Answer · 2013-12-16 17:32:45Z

-5

No, you can't clear only a part of the console window.

edited Dec 16, 2013 at 17:32

answered Dec 15, 2013 at 11:46

Babken Vardanyan

15.3k15 gold badges80 silver badges91 bronze badges

2 Comments

Benjamin Bannier Over a year ago

You can't even clear the full screen in standard C++.

Babken Vardanyan Over a year ago

@BenjaminBannier Not part of the standard, but you can do system("cls") or system("clear") which works fine if refresh rate isn't too high.

Collectives™ on Stack Overflow

Clear multiple lines

3 Answers 3

Comments

Comments

2 Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

2 Comments

Linked

Related