Question

In C++, Create a class, ShoppingCart. Each ShoppingCart contains a count of the number of items in each of three categories, produce, meats, others. You will populate the counts of items in each category with the rand() function. Produce with a range of 1 -10, meats with a range of 0 - 3 and other with a range of 1 - 30. You will used the Queue or Dequeue templates from the STL to generate a queue of 10 ShoppingCarts. You then process the queue. Each item in the produce category will take 4 seconds to process. Each item in the meat category will take 3 seconds to process. Each item in the other category will take one second to process. I suggest you include a method in ShoppingCart to report out the total processing seconds for an instance of a ShoppingCart based on the number of items in each category in that instance. Your "processing" will consist of keeping track of the total processing time for the entire queue. When complete, report out the total time in hours, minutes and seconds.

Answer 1

ShoppingCart.cpp

#include <iostream>

#include <stdlib.h>

class ShoppingCart {

public:

    ShoppingCart() {

        produceItems = rand() % 10 + 1;

        meatsItems = rand() % 3 + 0;

        othersItems = rand() % 30 + 1;

    }

    int totalProcessingSeconds() {

        return (produceItems*4) + (meatsItems*3) + othersItems;

    }

    int produceItems;

    int meatsItems;

    int othersItems;

};

main.cpp

#include <iostream>

#include <queue>

#include "shoppingcart.cpp"

using namespace std;

void processQueue(queue<ShoppingCart> queueList) {

    int totalSec=0;

    int hours, minutes;

    for(int i=0; i<10; i++) {

        totalSec += queueList.front().totalProcessingSeconds();

        queueList.pop();

    }

    minutes = totalSec / 60;

    hours = minutes / 60;

    cout << "Total processing time " << int(hours) << " hours " << int(minutes%60)

         << " minutes " << int(totalSec%60) << " seconds.";

    cout<<"Total seconds "<<totalSec;

}

int main()

{

    queue<ShoppingCart> list;

    for(int i=0; i<10; i++) {

        list.push(ShoppingCart());

    }

    processQueue(list);

    return 0;

}