input of a character from console without pressing enter
 

Hello. I am a newb programmer of C++. I use KDevelop 3.5.1 gcc++.

I am interested in creating a simple program that will allow the user to press a key and, without pressing enter, the computer to record that key (and use it).

I know the way in normal C++ is: 'int a=getch();' and it works, but this doesn't work on KDevelop...

Does anyone have any suggestions?

Thank you in advance!

You have to disable line buffering for the terminal.

You have to include ncurses.h in order to use getch()

Both of these comments are correct.

"Ordinary input" is accepted by the shell and piped to your application in a way that allows nice things like "type ahead."

When you want ordinary single-character input (like "Press Enter to continue"), you simply use a standard terminal-control library ... ncurses ... to do all of this and more.

Your character-based application will "just work" on a variety of types of hardware. (Yes, as a matter of fact I am old enough to remember what a real DEC VT100 looks like...)

if I have the following code:

"#include<iostream.h>
#include<ncurses.h>
main(){
int valuekey;
valuekey=getch();
}"

I get two errors: undefined reference to stdscr and wgetch. Could anyone guide me how I could fix this issue please?

you need to link it to the ncurses library
eg. g++ hello.cpp -o hello -lncurses

You also want to use #include<iostream> instead of <iostream.h> because iostream.h is pre standard C++

getchar();
 

You have to add this lines:
in the main() {
char ch;

system("stty -echo"); // supress echo
system("stty cbreak"); // go to RAW mode
// ch = getchar(); // or something like that
while ((ch = getchar()) != 'q') {
;; // DO what you want
}
system ("stty echo"); // Make echo work
system("stty -cbreak");// go to COOKED mode

}
ALL "C" kompilers supported.
// Do not brake it with Crtl-C. If you did so restore echo so
"stty echo" in blind mode. Echo supressed.
It works on all Linux systems, always. Do'nt forget to
include <stdlib.h>

Have sombody any Idea how to make it in Java?

THANK YOU VERY VERY MUCH!!

It actually works !!! Thanks a million !!! :)

By the way, my KDevelop 3.5.1 doesn't have iostream compatible with cout... i get an error when I try to #include<iostream> and use cout with it... Does anyone know why I have this problem?

its because its in a namespace, you need to do std::cout