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7 changes: 5 additions & 2 deletions booknotes/chapter02.md
Original file line number Diff line number Diff line change
@@ -1,5 +1,8 @@
# 第二章 开始学习 C++

(略)这一章很简单,无笔记。
cout 输出
// 注释,编译器会忽略
区分大小写
.cpp 文件扩展名

C++用分号隔开每一个执行语句。
C++用分号隔开每一个执行语句。