getch() for GCC

[GNU_man]

Is there a POSIX equivalent of the getch() function? I need it because it doesn't wait for the enter key to be pressed as the ANSI getchar() does.

[lakerdonald]

man getc

That should give you a list of all the getchar()-like functions

[Dolda2000]

If you don't want to have to wait until Enter is pressed, you simply need to turn off terminal buffering, using the tcsetattr function. There was another thread which discussed that in some depth.

[lakerdonald]

I've also had good luck with the readline library when it comes to doing input manipulation, tab-completion, etc. but Dolda's method is much simpler/straightforward.

[Santa's little helper]

Is there a POSIX equivalent of the getch() function? I need it because it doesn't wait for the enter key to be pressed as the ANSI getchar() does.

I'm not sure what POSIX says about getch() but you can modify whether
it waits or not by using nodelay()

Or did you mean if there is a POSIX function similar to the getch() of some
other (ahem) operating system ? Well there is a function called getch() so
you only need to type man getch and you'll see if it's what you want.

[penguin30126]

/*solution provided by kermi3 from this web posting C Board

#include <termios.h>
#include <unistd.h>

int mygetch(void)
{
struct termios oldt,
newt;
int ch;
tcgetattr( STDIN_FILENO, &oldt );
newt = oldt;
newt.c_lflag &= ~( ICANON | ECHO );
tcsetattr( STDIN_FILENO, TCSANOW, &newt );
ch = getchar();
tcsetattr( STDIN_FILENO, TCSANOW, &oldt );
return ch;
}

I would save that text above and set it as a header file the function you would call would be mygetch() works just like getch()

[i92guboj]

The curses library has also a getch function.