From f1c1e061787ce53f0d7c9093766075a0949516e6 Mon Sep 17 00:00:00 2001
From: TinyWang <2746975606@qq.com>
Date: Sat, 30 May 2020 21:26:10 +0800
Subject: [PATCH] book: fix the wrong about delctype (#101)

---
 book/en-us/02-usability.md | 2 +-
 book/zh-cn/02-usability.md | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/book/en-us/02-usability.md b/book/en-us/02-usability.md
index 7407c75..f7e763f 100644
--- a/book/en-us/02-usability.md
+++ b/book/en-us/02-usability.md
@@ -435,7 +435,7 @@ auto arr = new auto(10); // arr as int *
 ### decltype
 
 The `decltype` keyword is used to solve the defect that the auto keyword 
-can only type the variable. Its usage is very similar to `sizeof`:
+can only type the variable. Its usage is very similar to `typeof`:
 
 
 ```cpp
diff --git a/book/zh-cn/02-usability.md b/book/zh-cn/02-usability.md
index 9bd0d05..e5df14b 100644
--- a/book/zh-cn/02-usability.md
+++ b/book/zh-cn/02-usability.md
@@ -369,7 +369,7 @@ auto arr = new auto(10); // arr 被推导为 int *
 
 ### decltype
 
-`decltype` 关键字是为了解决 auto 关键字只能对变量进行类型推导的缺陷而出现的。它的用法和 `sizeof` 很相似：
+`decltype` 关键字是为了解决 auto 关键字只能对变量进行类型推导的缺陷而出现的。它的用法和 `typeof` 很相似：
 
 ```cpp
 decltype(表达式)