c 2b 2b dev 2fnull

1#include <iostream>
2
3void foo()
4{
5    std::cout << "Boring message. " << std::endl;
6}
7
8int main()
9{
10    std::cout.setstate(std::ios::failbit) ;
11    foo();
12    std::cout.clear() ;
13    std::cout << "Interesting message." << std::endl;
14    return 0;
15}
16