std::ios_base::openmode

typedef /*implementation defined*/ openmode;

static constexpr openmode app = /*implementation defined*/
static constexpr openmode binary = /*implementation defined*/
static constexpr openmode in = /*implementation defined*/
static constexpr openmode out = /*implementation defined*/
static constexpr openmode trunc = /*implementation defined*/
static constexpr openmode ate = /*implementation defined*/

Specifies available file open flags. It is a BitmaskType, the following constants are defined:

Constant	Explanation
`app`	seek to the end of stream before each write
`binary`	open in binary mode
`in`	open for reading
`out`	open for writing
`trunc`	discard the contents of the stream when opening
`ate`	seek to the end of stream immediately after open

open	opens a file and configures it as the associated character sequence (public member function of `std::basic_filebuf`)
(constructor)	constructs a basic_stringbuf object (public member function of `std::basic_stringbuf`)

std::ios_base::openmode

Example

See also