/* getch() function for Linux
 * Copyright (C) 2007 Susam Pal
 * 
 * You can use it under the terms of GNU General Public License v3
 */ 

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

int getch() {
  struct termios oldtc, newtc;
  int ch;
  tcgetattr(STDIN_FILENO, &oldtc);
  newtc = oldtc;
  newtc.c_lflag &= ~(ICANON | ECHO);
  tcsetattr(STDIN_FILENO, TCSANOW, &newtc);
  ch=getchar();
  tcsetattr(STDIN_FILENO, TCSANOW, &oldtc);
  return ch;
}

/* main() function to test getch() function */
/*
int main(int argc, char **argv) {
  int ch;
  for (;;) {
    ch = getch();
    printf("ch = %c (%d)\n", ch, ch);
    if(ch == 'x')
      break;
  }
  return 0;
}
*/