// calling.cpp -- defining, prototyping, and calling a function #include void simple(); // function prototype int main() { using namespace std; cout << "main() will call the simple() function:\n"; simple(); // function call cout << "main() is finished with the simple() function.\n"; // cin.get(); return 0; } // function definition void simple() { using namespace std; cout << "I'm but a simple function.\n"; }