From 5c610205419add4422f9d4a97097248a42a4c51d Mon Sep 17 00:00:00 2001
From: garenchan <1412950785@qq.com>
Date: Wed, 28 Nov 2018 18:33:13 +0800
Subject: [PATCH] 'strings' should be 'string'.

---
 21-shell/libc/string.h  | 4 ++--
 22-malloc/README.md     | 2 +-
 22-malloc/libc/string.h | 4 ++--
 23-fixes/libc/string.h  | 4 ++--
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/21-shell/libc/string.h b/21-shell/libc/string.h
index 75f2d1b..0e7942d 100644
--- a/21-shell/libc/string.h
+++ b/21-shell/libc/string.h
@@ -1,5 +1,5 @@
-#ifndef STRINGS_H
-#define STRINGS_H
+#ifndef STRING_H
+#define STRING_H
 
 void int_to_ascii(int n, char str[]);
 void reverse(char s[]);
diff --git a/22-malloc/README.md b/22-malloc/README.md
index da2ed0f..99dc482 100644
--- a/22-malloc/README.md
+++ b/22-malloc/README.md
@@ -15,7 +15,7 @@ our first page starts at 0x10000 (as hardcoded on `mem.c`) and
 subsequent `kmalloc()`'s produce a new address which is
 aligned 4096 bytes or 0x1000 from the previous one.
 
-Note that we added a new `strings.c:hex_to_ascii()` for
+Note that we added a new `string.c:hex_to_ascii()` for
 nicer printing of hex numbers.
 
 Another cosmetic modification is to rename `types.c` to 
diff --git a/22-malloc/libc/string.h b/22-malloc/libc/string.h
index 39f3969..b958faa 100644
--- a/22-malloc/libc/string.h
+++ b/22-malloc/libc/string.h
@@ -1,5 +1,5 @@
-#ifndef STRINGS_H
-#define STRINGS_H
+#ifndef STRING_H
+#define STRING_H
 
 void int_to_ascii(int n, char str[]);
 void hex_to_ascii(int n, char str[]);
diff --git a/23-fixes/libc/string.h b/23-fixes/libc/string.h
index 39f3969..b958faa 100644
--- a/23-fixes/libc/string.h
+++ b/23-fixes/libc/string.h
@@ -1,5 +1,5 @@
-#ifndef STRINGS_H
-#define STRINGS_H
+#ifndef STRING_H
+#define STRING_H
 
 void int_to_ascii(int n, char str[]);
 void hex_to_ascii(int n, char str[]);