Linux에서 getch() 구현

#include <stdio.h>
#include <termio.h>

 int getch(void)
    {
        int ch;
        struct termios buf, save;
        tcgetattr(0,&save);
        buf = save;
        buf.c_lflag &= ~(ICANON|ECHO);
        buf.c_cc[VMIN] = 1;
        buf.c_cc[VTIME] = 0;
        tcsetattr(0, TCSAFLUSH, &buf);
        ch = getchar();
        tcsetattr(0, TCSAFLUSH, &save);
        return ch;
    }