Answer:
Explanation:
The following program is written in Java. Using the program code from Purchase class in 5.13 I created each one of the fruit objects. Then I set the price for each object using the setPrice method. Then I set the number of each fruit that I intended on buying with the setNumberBought method. Finally, I called each objects getTotalCost method to get the final price of each object which was all added to the totalCost instance variable. This instance variable was printed as the total cost of the bill at the end of the program. My code HIGHLIGHTED BELOW
//Entire code is in text file attached below.
//MY CODE HERE
DecimalFormat df = new DecimalFormat("0.00");
oranges.setPrice(10, 2.99);
oranges.setNumberBought(2*12);
eggs.setPrice(12, 1.69);
eggs.setNumberBought(2*12);
apples.setPrice(3, 1);
apples.setNumberBought(20);
watermelons.setPrice(1, 4.39);
watermelons.setNumberBought(2);
bagels.setPrice(6, 3.50);
bagels.setNumberBought(12);
totalCost = oranges.getTotalCost() + eggs.getTotalCost() + apples.getTotalCost() + watermelons.getTotalCost() + bagels.getTotalCost();
System.out.println("Total Cost: $" + df.format(totalCost));
}
}
Answer:
continual user involvement gives the flexibility to analyze the requirements in right direction. because there is continuous meetings with the end user and he can provide right direction or avoids wrong interpretation of the requirement
Explanation:
continual user involvement is useful when we are following agile methodology where we are building complex systems. it is not useful for simple sytems and following waterfall methodology
Answer:
1. From the command prompt, type:
pgp --encrypt "my-message.txt" --recipient "Sean" --output "secret-message.txt.gpg"
2. Press Enter.
Explanation:
From the command line, the above command is entered and Enter is pressed.
The command start with pgp, then it has different options:
--encrypt: this specifies the input file to be encrypted
--recipient: this specifies the specific user to which the file is been encrypted
--output: this specifies the name to which the output (encrypted file) is saved.
Answer:
B. The cost of tour t is at most twice the cost of the optimal tour.
Explanation:
You are using a polynomial time 2-approximation algorithm to find a tour t for the traveling salesman problem.
The cost of tour t is at most twice the cost of the optimal tour
The equation represented as Cost(t) <= 2 Cost(T)
Where
Cost (t) represents cost of tour t
Cost(T) represents cost of the optimal tour
Answer:
#include <stdlib.h>
#include <time.h>
#include<iostream.h>
int main(void) {
int seedVal = 0;
seedVal = 4;
srand(seedVal);
/* Solution*/
cout<<rand() % 149 + 100<<endl;
cout<<rand() % 149 + 100<<endl;
return 0;
}
Explanation:
We start with the required include statements to enable use of srand, rand and time functions. I have also added iostream library to use "cout" function.
After that, the seed is initialized using srand(). And then the two rand functions are called with ranges including and between 100 and 149, and printed out.
