c++ - How to delete a newline using \b -


i want output of following code

-|-2-|-

(when input value of key 2). know \b move cursor 1 space why isn't able move 1 space after newline used input value of key. possible use escape character \b after newline character has been used.

#include<stdio.h> #include<conio.h>  int main() {     int key;     printf("enter value of key: )"     printf("-|-");     scanf("%d",&key);     printf("\b-|-");     return 0; }

the terminal using output device not have concept of lines of text: knows grid of cells, each of can filled character. 1 of cell positions current cell.

the terminal interprets bs character instruction move current cell 1 one column left. happens if in first column? terminal doesn't know previous line ended, can't go end of line. go last column of row above, , terminals can configured that, that's not want.

this overly simplified, it's why \b won't delete line break.


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