vxworks下怎么建立文件

用普通的文件open（）函数就可以了.

#include <ioLib.h>

open( )

NAME

open( ) - open a file

SYNOPSIS

int open

(

const char * name, /* name of the file to open */

int flags, /* O_RDONLY, O_WRONLY, O_RDWR, or O_CREAT */

int mode /* mode of file to create (UNIX chmod style) */

)

DESCRIPTION

This routine opens a file for reading, writing, or updating, and returns a file descriptor for that file. The arguments to open( ) are the filename and the type of access:

O_RDONLY (0) (or READ) - open for reading only.

O_WRONLY (1) (or WRITE) - open for writing only.

O_RDWR (2) (or UPDATE) - open for reading and writing.

O_CREAT (0x0200) - create a file.

In general, open( ) can only open pre-existing devices and files. However, for NFS network devices only, files can also be created with open( ) by performing a logical OR operation with O_CREAT and the flags argument. In this case, the file is created with a UNIX chmod-style file mode, as indicated with mode. For example:

fd = open ("/usr/myFile", O_CREAT | O_RDWR, 0644)

Only the NFS driver uses the mode argument.

NOTE

For more information about situations when there are no file descriptors available, see the manual entry for iosInit( ).

RETURNS

A file descriptor number, or ERROR if a file name is not specified, the device does not exist, no file descriptors are available, or the driver returns ERROR.

ERRNO

ELOOP

SEE ALSO

ioLib, creat( )

VARARGS2

其中creat和open效果一样，他们最终调用同一个函数，最终文件保存在你设置里放vxworks的位置，比如我的就放在D:\目录下了，试试看吧

visual studio2019中添加外部文件或者文件夹：

1.现在在visual studio中新建一个项目：

7.配置附加包含目录：点击项目，再点击属性。然后再“c/c++”下“常规”设置“附加包含目录”，即填写需要包含文件的文件夹路劲，如果有多个文件夹路劲则用分号空开。最后点击确认即可

程序输出结果为100，项目导入外部文件成功！类似的将外部文件夹导入项目中类似 *** 作

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