Improve byte reading from stdin

1 files changed, 2 insertions, 0 deletions

diff --git a/fgetc.h b/fgetc.h
index eae2f7b..9e2d53b 100644
--- a/fgetc.h
+++ b/fgetc.h
@@ -9,6 +9,8 @@
 #ifndef FGETC_H
 #define FGETC_H
 
+#include <errno.h>
+
 int
 my_fgetc(FILE * input);