display.h now includes the card header.

lib/display.h

@@ -1,6 +1,8 @@
 #ifndef DISPLAY_H
 #define DISPLAY_H
 
+#include "card.h"
+
 #define DIAMONDS_SYMBOL "\u2666"
 #define SPADES_SYMBOL   "\u2660"
 #define HEARTS_SYMBOL   "\u2665"

src/tty-solitaire.c

@@ -1,7 +1,7 @@
 #include <ncurses.h>
 #include <malloc.h>
 #include <string.h>
-#include "../lib/card.h"
+#include "../lib/display.h"
 
 int main(int argc, const char *argv[]) {
   char message[] = "Welcome to tty-solitaire.";