Add stdbool.h everywhere.

1 files changed, 1 insertions, 3 deletions

diff --git a/ratio.h b/ratio.h
index 1f54781..6c6469d 100644
--- a/ratio.h
+++ b/ratio.h
@@ -1,6 +1,4 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
+#include <stdbool.h>
 
 typedef struct {bool s; unsigned long long n; unsigned long long d;} rational;