| fstream::rdbuf |
public member function |
filebuf* rdbuf ( ) const; |
|
Get the associated filebuf object
Returns a pointer to the filebuf object associated with the stream.
Parameters
none
Return Value
A pointer to the
filebuf object associated with the stream.
Notice that for any successfully constructed
fstream object this pointer is never a null pointer, even if no files have been opened or if the stream is unbuffered.
Example
// open and close a file using buffer members
#include <fstream>
using namespace std;
int main () {
char ch;
fstream filestr;
filebuf *pbuf;
pbuf=filestr.rdbuf();
pbuf->open ("test.txt", fstream::in | fstream::out);
// >> i/o operations here <<
pbuf->close();
return 0;
}
|
The example opens an input and an output file, then gets the pointers to their respective file buffers and performs operations on them to make a character-by-character copy of the input file.
Basic template member declaration
( basic_ofstream<charT,traits,Allocator> )
basic_filebuf<charT,traits,Allocator> * rdbuf () const;
|
See also
| ios::rdbuf | Get/set the associated stream buffer (public member function) |
