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 <fstream>
void hexMultiplicationTable (std::streambuf* buffer, int num)
{
std::ostream hexout(buffer);
hexout << std::hex << std::showbase;
for (int i=1; i<=num; ++i) {
for (int j=1; j<=10; ++j) {
hexout << i*j << ' ';
}
hexout << std::endl;
}
} // does NOT close buffer
int main()
{
using namespace std;
int num = 5;
cout << "We print " << num
<< " lines hexadecimal" << endl;
hexMultiplicationTable(cout.rdbuf(),num);
cout << "That was the output of " << num
<< " hexadecimal lines " << endl;
}