Include string.h in errno_speak.c

diff --git a/errno_speak.c b/errno_speak.c
index 832ebe3..98e06e9 100644 (file)
--- a/errno_speak.c
+++ b/errno_speak.c
@@ -1,6 +1,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 /*
  * This program takes an errno number as input, and prints out a long