The following code example is taken from the book
Object-Oriented Programming in C++
by Nicolai M. Josuttis, Wiley, 2002
© Copyright Nicolai M. Josuttis 2002
#include <iostream>
#include <cstdlib>
int main()
{
char c;
// as long as a character c can be read
while (std::cin.get(c)) {
// output character
std::cout.put(c);
}
if (! std::cin.eof()) {
std::cerr << "read error" << std::endl;
return EXIT_FAILURE;
}
if (! std::cout.good()) {
std::cerr << "write error" << std::endl;
return EXIT_FAILURE;
}
}