add update system

src/main.c

@@ -1,13 +1,48 @@
 #include <ncurses.h>
+#include <string.h>
+
+void update(WINDOW *win)
+{
+        int win_y, win_x;
+        char message[] = "test";
+        getmaxyx(win, win_y, win_x);
+        mvwprintw(win, win_y/2, win_x/2 - strlen(message)/2, "%s", message);
+        wrefresh(win);
+}
 
 int main()
 {	
         initscr();
         noecho();
+        cbreak();
         curs_set(0);
-        printw("Hello World");
+
+        int y,x;
+        getmaxyx(stdscr, y, x);
+
+        WINDOW *top_win;
+        WINDOW *bottom_win;
+
+        top_win = newwin(y/2, x, 0, 0);
+        bottom_win = newwin(y-y/2, x, y/2, 0);
+
+        box(top_win, 0, 0);
+        box(bottom_win, 0, 0);
+
         refresh();
-        getch();
+        wrefresh(top_win);
+        wrefresh(bottom_win);
+
+        int ch = ERR;
+        while(ch == ERR)
+        {
+                update(top_win);
+                update(bottom_win);
+                ch = getch();
+        };
+
+        delwin(top_win);
+        delwin(bottom_win);
         endwin();
 
         return 0;