Question

I need help with Part 2! Coded in Java please!

Abby wants to start a backyard chicken egg business. As any good she wants to “count the costs” of such an operation to determine if she can make a profit. While there are a number of variables, naturally the most influential ones are:

• Number of chickens
• Average number of eggs laid per day per chicken
• Pounds of feed per chicken per day
• Cost per pound for feed
• Empty carton cost

Not being much of a programmer yet, she needs your help by writing a program which will help her assess the viability of her venture. The program should fulfill the following requirements:

Part 1:

1. Prompt the user for the variables noted above.
2. If the user enters 0 for number of chickens, end the program (Hint: break out of the while loop).
3. When all the parameters are entered, echo them back to the user identifying each one.
4. Calculate the total cost of the operation per month. (Assume 30 days)
5. Determine the cost to produce each dozen eggs. (Note: you may ignore any left-over eggs)

Part 2:

1. Since the number of chickens, eggs laid per chicken, and pounds of feed per chicken per day, scale linearly with the operation it becomes apparent that the profit or loss of the venture is heavily influenced by the cost of the feed. A larger flock could command bulk feed purchases resulting in a lower per pound costs. However, the time of year and weather may also impact the cost of feed. As such, Abby wants to calculate the cost per dozen with the supplied feed cost varied from -25% to +25% at 5% intervals. At each interval, output the cost per dozen assuming the other variables remain constant.

Hint: The easiest way to do this is to let the percent be controlled in a for-loop varying from -25 to 25 with a step of 5.

Part 3:

            Using UMLet or Draw.IO draw an activity diagram to document your programs implementation.

part one will be needed to be solved inorder to do part 2

Answer 1

import java.util.Scanner;

public class profit_part1 {
    int profit(int num_of_chickens,int eggs_perchicken_perday,int feed_perchicken_perday,int cost_perfeed_pound,int empty_cartoon_cost,int cost_of_one_egg)
    {    if(num_of_chickens==0)
          return 0;

        int profit_per_day=0;
        profit_per_day=(eggs_perchicken_perday*num_of_chickens*cost_of_one_egg)-(feed_perchicken_perday*cost_perfeed_pound*num_of_chickens)-empty_cartoon_cost;
        int profit_per_month=profit_per_day*30;

        int per_dozen=0;
        per_dozen=(profit_per_month/(num_of_chickens*eggs_perchicken_perday*30))*12;

        System.out.println("The cost per month is: "+profit_per_month);
        System.out.println("The cost of per dozen egg is: "+per_dozen);
        return 1;
    }
}

public class profit_part2 {

    int profit(int num_of_chickens,int eggs_perchicken_perday,int feed_perchicken_perday,int cost_perfeed_pound,int empty_cartoon_cost,int cost_of_one_egg)
    {    if(num_of_chickens==0)
        return 0;

        double profit_per_day=0;
        double new_feed_cost=0;
        //for the feed cost varying from -25% to 0%
        for(double i=25;i>=0;i=i-5)
        {
           new_feed_cost=cost_perfeed_pound-((i/100)*cost_perfeed_pound);
            profit_per_day=(eggs_perchicken_perday*num_of_chickens*cost_of_one_egg)-(feed_perchicken_perday*new_feed_cost*num_of_chickens)-empty_cartoon_cost;
            double profit_per_month=profit_per_day*30;

            double per_dozen=0;
            per_dozen=(profit_per_month/(num_of_chickens*eggs_perchicken_perday*30))*12;

            System.out.println("the cost per dozen is: "+per_dozen);
        }
        //for the feed cost varying from 5% to 25%
        for(double i=5;i<=25;i=i+5)
        {
            new_feed_cost=cost_perfeed_pound+((i/100)*cost_perfeed_pound);
            profit_per_day=(eggs_perchicken_perday*num_of_chickens*cost_of_one_egg)-(feed_perchicken_perday*new_feed_cost*num_of_chickens)-empty_cartoon_cost;
            double profit_per_month=profit_per_day*30;

            double per_dozen=0;
            per_dozen=(profit_per_month/(num_of_chickens*eggs_perchicken_perday*30))*12;

            System.out.println("the cost per dozen is: "+per_dozen);
        }
        return 1;
    }
}

public class main {
 public  static  void main(String args[]) {
     Scanner sc = new Scanner(System.in);
     int num_of_chickens, eggs_perchicken_perday, feed_perchicken_perday, cost_perfeed_pound, empty_cartoon_cost, cost_of_one_egg;
     num_of_chickens = sc.nextInt();
     eggs_perchicken_perday =sc.nextInt();
     feed_perchicken_perday=sc.nextInt();
     cost_perfeed_pound=sc.nextInt();
     empty_cartoon_cost=sc.nextInt();
     cost_of_one_egg=sc.nextInt();

     profit_part1 p1=new profit_part1();
     p1.profit(num_of_chickens, eggs_perchicken_perday, feed_perchicken_perday, cost_perfeed_pound, empty_cartoon_cost, cost_of_one_egg);
     profit_part2 p2=new profit_part2();
     p2.profit(num_of_chickens, eggs_perchicken_perday, feed_perchicken_perday, cost_perfeed_pound, empty_cartoon_cost, cost_of_one_egg);

 }
}