#include <string.h>
#include <ncurses.h>
#include <unistd.h>

#define MAX 50

#define HELLO "Hello World!"

int main()
{
   int i, n;
   int x, y;

   initscr();

   y = LINES / 2;
   x = (COLS - strlen(HELLO)) / 2; 

   move(y,x);

   start_color();
   n = 1;

   //init_pair(n++, COLOR_WHITE, COLOR_BLACK);
   init_pair(n++, COLOR_BLACK, COLOR_WHITE);
   init_pair(n++, COLOR_RED, COLOR_WHITE);
   init_pair(n++, COLOR_GREEN, COLOR_WHITE);
   init_pair(n++, COLOR_YELLOW, COLOR_WHITE);
   init_pair(n++, COLOR_CYAN, COLOR_WHITE);
   init_pair(n++, COLOR_MAGENTA, COLOR_WHITE);
   init_pair(n++, COLOR_BLACK, COLOR_BLUE);
   init_pair(n++, COLOR_WHITE, COLOR_BLUE);
   init_pair(n++, COLOR_YELLOW, COLOR_BLUE);
   init_pair(n++, COLOR_CYAN, COLOR_BLUE);
   init_pair(n++, COLOR_GREEN, COLOR_BLUE);
   init_pair(n++, COLOR_RED, COLOR_BLUE);
   init_pair(n++, COLOR_RED, COLOR_BLUE);

   for ( i = 0; i < MAX; i++ ) {
      move(y,x);

      if ( i % 2 ) {
         attron(A_BOLD);
      } else {
         attroff(A_BOLD);
      }

      attron( COLOR_PAIR( i % n ) );
      printw("Hello World!");
      attroff( COLOR_PAIR( i % n ) );

      refresh();

      usleep(400000);
   }

   getch();
   endwin();

   return 0;
}