--- a/c/realtime_input/main.cc	Fri Nov 21 12:18:24 2014 +0900
+++ b/c/realtime_input/main.cc	Tue Jan 20 15:27:43 2015 +0900
@@ -1,5 +1,82 @@
 #include <stdio.h>
+#include <termios.h>
+#include <term.h>
+#include <curses.h>
+#include <unistd.h>
+
+static struct termios initial_settings, new_settings;
+static int peek_character = -1;
+
+void init_keyboard();
+void close_keyboard();
+int kbhit();
+int readch();
+
+int main()
+{
+   int ch = 0;
+
+   init_keyboard();
+   while (ch != 'q') {
+        printf("looping\n");
+        sleep(1);
+        if (kbhit()) {
+            ch = readch();
+            printf("you hit %X : %c\n",ch,ch);
+        }
+    }
+    close_keyboard();
+    _exit(0);
+}
+
 
-int main(int argc, char *argv[]){
-    printf("Hello World!\n");
+void init_keyboard()
+{
+    tcgetattr(0, &initial_settings);
+    new_settings = initial_settings;
+    new_settings.c_lflag &= ~ICANON;
+    new_settings.c_lflag &= ~ECHO;
+    new_settings.c_lflag &= ~ISIG;
+    new_settings.c_cc[VMIN] = 0;
+    new_settings.c_cc[VTIME] = 0;
+    tcsetattr(0, TCSANOW, &initial_settings);
+}
+
+void close_keyboard()
+{
+    tcsetattr(0, TCSANOW, &initial_settings);
 }
+
+int kbhit()
+{
+    char ch;
+    int nread;
+
+    if (peek_character != -1)
+        return 1;
+    new_settings.c_cc[VMIN]=0;
+    tcsetattr(0, TCSANOW, &new_settings);
+    nread = read(0, &ch, 1);
+    new_settings.c_cc[VMIN]=1;
+    tcsetattr(0, TCSANOW, &new_settings);
+
+    if (nread == 1) {
+        peek_character = ch;
+        return 1;
+    }
+    return 0;
+}
+
+
+int readch()
+{
+    char ch;
+
+    if (peek_character != -1) {
+        ch = peek_character;
+        peek_character = -1;
+        return ch;
+    }
+    read(0, &ch, 1);
+    return ch;
+}