In C++, Recode peach jamming example to use suggested STL algorithms instead of hand-written loops.

Code to be rewritten:

#include  #include  #include  #include  #include  #include  using std::cin; using std::cout; using std::endl; using std::string; using std::vector; using std::deque; struct Peaches{ double weight; // oz bool ripe; // ripe or not void print() const { cout << (ripe?"ripe":"green") << ", " << weight << endl; } }; int main(){ srand(time(nullptr)); const double minWeight = 3.; const double maxWeight = 8.; cout << "Input basket size: "; int size; cin >> size; vector  basket(size); // assign random weight and ripeness peaches in the basket // replace with generate() for(auto it = basket.begin(); it != basket.end(); ++it){ it->weight = minWeight + static_cast(rand())/RAND_MAX*(maxWeight - minWeight); it->ripe = rand() % 2; } // for_each() possibly cout << "all peaches"<< endl; for(const auto &e: basket) { e.print(); } // moving all the ripe peaches from basket to peck // remove_copy_if() with back_inserter()/front_inserter() or equivalents deque peck; for(auto it=basket.begin(); it != basket.end();) if(it->ripe){ peck.push_front(std::move(*it)); it=basket.erase(it); }else ++it; // for_each() possibly cout << "peaches remainng in the basket"<< endl; for(const auto &e: basket) { e.print(); } cout << endl; // for_each() possibly cout << "peaches moved to the peck"<< endl; for(const auto &e: peck) { e.print(); } // prints every "space" peach in the peck const int space=3; cout << " every " << space << "\'d peach in the peck"<< endl; // replace with advance()/next()/distance() // no explicit iterator arithmetic auto it=peck.cbegin(); int i = 1; while(it != peck.cend()){ if(i == space){ it->print(); i=0; } ++i; ++it; } // putting all small ripe peaches in a jam // use a binder to create a functor with configurable max weight // accumulate() or count_if() then remove_if() const double weightToJam = 10.0; double jamWeight = 0; for(auto it=peck.begin(); it != peck.end();) if(it->weight < weightToJam){ jamWeight += it->weight; it=peck.erase(it); }else ++it; cout << "Weight of jam is: " << jamWeight << endl; }