The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference
by Nicolai M. Josuttis, Addison-Wesley, 1999
© Copyright Nicolai M. Josuttis 1999
#include <iostream>
#include "inbuf1.hpp"
int main()
{
inbuf ib; // create special stream buffer
std::istream in(&ib); // initialize input stream with that buffer
char c;
for (int i=1; i<=20; i++) {
// read next character (out of the buffer)
in.get(c);
// print that character (and flush)
std::cout << c << std::flush;
// after eight characters, put two characters back into the stream
if (i == 8) {
in.unget();
in.unget();
}
}
std::cout << std::endl;
}