是什么的#include℃之间的差异;文件名＆GT;和＆＃包括QUOT;文件名＆QUOT;？ [英] What is the difference between #include <filename> and #include "filename"?

问题描述

在C和C ++编程语言，是用尖括号，并在包含语句中使用引号之间的区别，如下所示？

1. 的#include＆LT;＆名GT;


2. 的#include文件名

解决方案

所不同的是在位置，所包含的文件preprocessor搜索。

有关的#include文件名的preprocessor在同一目录作为包含指令的文件搜索。这种方法通常用于包括程序员定义的头文件。

有关的#include＆LT;文件名＆GT; 在执行依赖性preprocessor搜索，通常在搜索目录$ P $编译器/ IDE对指定。这种方法通常用于包括标准库的头文件。

In the C and C++ programming languages, what is the difference between using angle brackets and using quotes in an include statement, as follows?

1. #include <filename>
2. #include "filename"

解决方案

The difference is in the location where the preprocessor searches for the included file.

For #include "filename" the preprocessor searches in the same directory as the file containing the directive. This method is normally used to include programmer-defined header files.

For #include <filename> the preprocessor searches in an implementation dependent manner, normally in search directories pre-designated by the compiler/IDE. This method is normally used to include standard library header files.

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