Linux Equivalent for Conio.H Getch()

Linux equivalent for conio.h getch()

There are a number of different ways of doing this more portably. The simplest is to use curses:

#include "curses.h"

int main() {
    initscr();
    addstr("hit a key:");
    getch();
    return endwin();
}

What is the equivalent to getch() & getche() in Linux?

#include <termios.h>
#include <stdio.h>

static struct termios old, current;

/* Initialize new terminal i/o settings */
void initTermios(int echo) 
{
  tcgetattr(0, &old); /* grab old terminal i/o settings */
  current = old; /* make new settings same as old settings */
  current.c_lflag &= ~ICANON; /* disable buffered i/o */
  if (echo) {
      current.c_lflag |= ECHO; /* set echo mode */
  } else {
      current.c_lflag &= ~ECHO; /* set no echo mode */
  }
  tcsetattr(0, TCSANOW, ¤t); /* use these new terminal i/o settings now */
}

/* Restore old terminal i/o settings */
void resetTermios(void) 
{
  tcsetattr(0, TCSANOW, &old);
}

/* Read 1 character - echo defines echo mode */
char getch_(int echo) 
{
  char ch;
  initTermios(echo);
  ch = getchar();
  resetTermios();
  return ch;
}

/* Read 1 character without echo */
char getch(void) 
{
  return getch_(0);
}

/* Read 1 character with echo */
char getche(void) 
{
  return getch_(1);
}

/* Let's test it out */
int main(void) {
  char c;
  printf("(getche example) please type a letter: ");
  c = getche();
  printf("\nYou typed: %c\n", c);
  printf("(getch example) please type a letter...");
  c = getch();
  printf("\nYou typed: %c\n", c);
  return 0;
}

Output:

(getche example) please type a letter: g
You typed: g
(getch example) please type a letter...
You typed: g

Where is the conio.h header file on Linux? Why can't I find conio.h ?

conio.h is a C header file used with old MS-DOS compilers to create text user interfaces. Compilers that target other operating systems, such as Linux-based, 32-bit Windows and OS/2, provide equivalent functionality through other header files and libraries.

The #include <curses.h> will give you almost all of the functionality provided by conio.h.

"ncurses" needs to be installed in the first place.

If you use the Apt package manager:

sudo apt-get install libncurses5-dev libncursesw5-dev

If you use rpm:

sudo yum install ncurses-devel ncurses

For getch, take a look at the "NCURSES Programming HOWTO" article.

Replacement for conio.h in Linux

There is an replacement version of Conio.h for linux based on NCurses.

http://sourceforge.net/projects/linux-conioh/

Using kbhit() and getch() on Linux

The ncurses howto cited above can be helpful. Here is an example illustrating how ncurses could be used like the conio example:

#include <ncurses.h>

int
main()
{
    initscr();
    cbreak();
    noecho();
    scrollok(stdscr, TRUE);
    nodelay(stdscr, TRUE);
    while (true) {
        if (getch() == 'g') {
            printw("You pressed G\n");
        }
        napms(500);
        printw("Running\n");
    }
}

Note that with ncurses, the iostream header is not used. That is because mixing stdio with ncurses can have unexpected results.

ncurses, by the way, defines TRUE and FALSE. A correctly configured ncurses will use the same data-type for ncurses' bool as the C++ compiler used for configuring ncurses.

Is there an equivalent of getch() function in Mac?

You probably want to look at ncurses. It has a lot in common with conio. You can get its documentation with "man ncurses".

How can I use kbhit() and getch() on Linux? C++

As zoelabbb said in this link,

Step 1 :
Open terminal sudo apt-get update

sudo apt-get upgrade
sudo apt-get install git
git clone https://github.com/zoelabbb/conio.h.git
cd conio.h

Step 2 :

sudo cp conio.h /usr/include/

or (step 2)

In GUI, using open-as-administrator pakage:

Copy file conio.h --> !! copy file not folder !!
Go to /usr/include/
Right click on folder /usr/include/
Choose Open as Administrator
Paste file conio.h

Finaly after step 1 and step 2 you can use #include <conio.h> in your code.

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