Using Polymorphic Classes

TestFunctions.C

#include <iostream> #include "Sinus.h" #include "Cosinus.h" #include "FunctionRegistry.h" using namespace std; int main() { FunctionRegistry registry; registry.add(new Sinus()); registry.add(new Cosinus()); string fname; double x; while (cout << ": " && cin >> fname >> x) { if (registry.is_known(fname)) { Function* f(registry.get_function(fname)); cout << f->execute(x) << endl; } else { cout << "Unknown function name: " << fname << endl; } } } // main