Source file inclusion
来自cppreference.com
< cpp | preprocessor
 |
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包括其他源文件后，立即指令到当前源文件的行.
原文：
Includes other source file into current source file at the line immediately after the directive .
[编辑] 语法
#include <filename>
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(1) | ||||||||
#include "filename"
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(2) | ||||||||
[编辑] 解释
包括源文件，确定filename到当前的源文件后，立即指令在该行.
原文：
Includes source file, identified by filename into the current source file at the line immediately after the directive.
该指令的第一个版本只搜索标准包括目录。标准C + +库，作为标准C库，以及隐含在标准include目录。标准包括目录可以由用户通过编译器选项控制.
原文：
The first version of the directive searches only standard include directories. The standard C++ library, as well as standard C library, is implicitly included in standard include directories. The standard include directories can be controlled by the user through compiler options.
第二个版本首先搜索当前文件所在的目录下，并只有当文件没有找到，搜索的标准包括目录.
原文：
The second version firstly searches the directory where the current file resides and, only if the file is not found, searches the standard include directories.
在的情况下，文件没有找到，程序是格式错误的.
原文：
In the case the file is not found, program is ill-formed.
