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Fix typo in C++.md #2

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Merged
linw7 merged 1 commit into from
Mar 17, 2018
Merged

Fix typo in C++.md #2

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2 changes: 1 addition & 1 deletion 编程语言C++.md
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Expand Up @@ -72,7 +72,7 @@ C/C++的内容又多又杂，常常看到有人罗列相关书单，觉得毫无
- malloc和free返回的是void类型指针（必须进行类型转换），new和delete返回的是具体类型指针。

9. 指针和引用区别？
- 引用只是别名，不占用具体存储空间，只有声明没有定义；指针时具体变量，需要占用存储空间。
   - 引用只是别名，不占用具体存储空间，只有声明没有定义；指针是具体变量，需要占用存储空间。

- 引用在声明时必须初始化为另一变量，一旦出现必须为typename refname &varname形式；指针声明和定义可以分开，可以先只声明指针变量而不初始化，等用到时再指向具体变量。

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