eclipse上配置好cdt后，新建一个简单的项目测试下，当写入头文件时，却出现如下错误提示：

unresolved inclusion: <stdio.h>

原因与解决：

这是c/c++标准库未设置所致。解决方法如下。

选中项目，依次操作：

右键单击 -> properties -> C/C++ General -> Paths and Symbols -> Add…  -> file system.

然后选择c/c++库的位置：/usr/include

如此再继续添加/usr/include/c++路径。确定后即可

参考：

Eclipse reports Unresolved inclusion for system headers such as stdio.h if it cannot locate the header files for a project. You can resolve this by right-clicking on the project in the Project Explorer view and then selecting Properties… from the context menu. In the dialog box, select: C/C++ General → Paths and Symbols → Add… and then add the path to the ARM Compiler headers on your host workstation. For example, C:Program FilesDS-5include. Select both Add to all configurations and Add to all languages, click on Apply so that Eclipse can rebuild the index.