#include #include #include #include using namespace std; using namespace hello; int main () { // Basics. // { ostringstream o; say_hello_formatted (o, "Hi, World!"); assert (o.str () == "Hi, World!\n"); } { ostringstream o; say_hello (o, "World"); assert (o.str () == "Hello, World!\n"); } // Volume. // { ostringstream o; say_hello (o, "World", format::volume::loud); assert (o.str () == "HELLO, World!\n"); } }