C & C++ getch() and clrscr() functions in Linux

8 posts · originally from https://geek.digit.in/community/threads/c-c-getch-and-clrscr-functions-in-linux.107889/

Hope this helps newbies.

clrscr()

Code:

system("clear");      //Needs cstdlib headder file so do #include<cstdlib>

getch()

Code:

getchar();            // Needs stdio.h so do #include<stdio.h>

And yeah, always use

Code:

using namespace std;

after including headders. Need that because actual usage of cout otherwise is std::cout and not cout, and so on.

that system call will cost you jackpot

T159 said:
that system call will cost you jackpot

why ?

system("clear") is NOT exactly same as clrscr() and gives a warning when I try it.
abc.c:7: warning: implicit declaration of function ‘system’
abc.c:8: warning: control reaches end of non-void function

(you can avoid the first warning by stdlib.h but the second one stays)

Also I think, Linux users don't need a clrscr() 'coz:
(1) It will not go according to usual conventions used. For instance there are no terminal programs I have used which actually clear the space.
(2) Newbies or even amateurs who generally want to program in Linux should use Geany. It's excellent.

^Fully agree, though I don't get the errors.

1. Yup. We guys don't like it when a program abruptly clears the valuble output.

2. WTH ? Geany ? How does the IDE have any thing to do with a function ?

Anyway, I posted this because newbies and switches from windows may need something to make their windows apps compatible with linux.

namespace is not needed !!!

^^Yes it is. Unless for stuff like cin, cout, etc you replace them with std::cin, std::cout, etc, which is time consuming.

Thank you dude!!

I always had this confusion..!