Write a function so that the main() code below can be replaced by the simpler code that calls function original main(): int main() { double milesperhour; double minutestraveled; double hourstraveled; double milestraveled; cin > > milesperhour; cin > > minutestraveled; hourstraveled = minutestraveled / 60.0; milestraveled = hourstraveled * milesperhour; cout < < "miles: " < < milestraveled < < endl; return 0;