For those who know Qbasic:inkey$ in c++

Is there an inkey$-like command in c++?

What does the inkey$ command do, maybe I can help you.

QBasic inkey$ holds any pressed keys like 'e' or 't'.

you would use it like this:

a$ = inkey$
<process on a$>

inkey holds the current keypress. What he needs to know is how to use the termios struct to get non-canonical <sp?> input. I don't have the code off the top of my head, someone else?

This code would set the terminal to raw mode.


code:--------------------------------------------------------------------------------
#include <termios.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>

struct termios o,
n;
if( tcgetattr( STDIN_FILENO, &o ) != 0 ) {
/* error handling */
}
n = o;
n.c_lflag &= ~( ICANON | ECHO );
n.c_cc[VMIN] = 1;
n.c_cc[VTIME] = 0;
if( tcsetattr( STDIN_FILENO, TCSANOW, &n ) != 0 ) {
/* error handling */
}
if( fcntl( STDIN_FILENO, F_SETFL, O_NONBLOCK ) == -1 ) {
/* error handling */
}
--------------------------------------------------------------------------------


Use this to make the terminal raw and nonblocking. And then you call getchar( ) at some arbitrary point - If it returns EOF, there was no key to read, otherwise it returns the key.


code:--------------------------------------------------------------------------------int ch;
ch = getchar( );
if( ch != EOF ) {
/* do something with ch */
}--------------------------------------------------------------------------------


And when you're done, restore the old terminal state:


code:--------------------------------------------------------------------------------tcsetattr( STDIN_FILENO, TCSANOW, &o );




Props to vVv, I stole his code.