christopher diggins wrote:
Nonetheless consider the following psuedo-program (which does model a lot of software):
void Fu(string s) { cout << s; }
string Bar() { string ret; cin >> ret; return ret; }
string Transform(string s) { string ret(s); // do some stuff return ret; }
void DoTransform() { while (!cin.eof()) { Fu(Transform(Bar())); } }
int main() { DoTransform(); return 0; }
IMO, this is how a more realistic example would look like: void consume( string const & s, ostream & out ) { out << s; } string produce( istream & in ) { string ret; in >> ret; return ret; } // Transform as above void do_transform( istream & in, ostream & out ) { while( !in.eof() ) { consume( Transform( produce(in) ), out ); } } int main() { do_transform( cin, cout ); } This is just a reflection of the general "globals are bad" principle.