|
ostream::ostream
[constructor]
explicit ostream (streambuf * sb); | ostream |
| cplusplus.com |
Construct an object.
Sets the initial values to inherited class members.
This is done by calling inherited function:
init(sb)
Parameters.
Return Value.
None (constructor).
Example.
// ostream constructor
#include <iostream>
#include <fstream>
using namespace std;
int main () {
filebuf fb;
fb.open ("test.txt",ios::out);
ostream os(&fb);
os << "Test sentence\n";
fb.close();
return 0;
}
This code uses a filebuf object (derived from streambuf)
to open the file test.txt.
The buffer is passed as parameter to the ostream constructor, associating
it to the stream.
You will seldom construct ostream objects directly like in the previous
example, you will rather use objects of derived classes like ofstream,
ostringstream or your own ones.
Basic template member declaration ( basic_ostream<charT,traits> ):
explicit basic_ostream ( basic_streambuf<charT,traits>* sb ); |
See also.
ios::init
ostream class