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Alenkinab [10]
3 years ago
5

• Open your Netbeans IDE and answer the following question

Computers and Technology
1 answer:
VARVARA [1.3K]3 years ago
8 0

Answer:

public static void main(String[] args)

   {

       int cdCount;

       double cdCountAfterDiscount;

       DecimalFormat df = new DecimalFormat("$##.##"); // Create a Decimal Formatter for price after discount

       System.out.println("Enter the amount of CD's bought");

       Scanner cdInput = new Scanner(System.in);  // Create a Scanner object

       cdCount = Integer.parseInt(cdInput.nextLine());  // Read user input

       System.out.println("CD Count is: " + cdCount);  // Output user input

       if(cdCount <= 14 )

       {

           System.out.println("There is no discount");

           System.out.println("The final price is " + cdCount*3.5);

       }

       if(cdCount >= 15 && cdCount<=50)

       {

           System.out.println("You have a 1% discount.");

           cdCountAfterDiscount = (cdCount *3.5)-(3.5*.01);

           System.out.println("The final price is " + df.format(cdCountAfterDiscount));

       }

       if(cdCount >= 51 && cdCount<120)

       {

           System.out.println("You have a 5% discount.");

           cdCountAfterDiscount = (cdCount *3.5)-(3.5*.05);

           System.out.println("The final price is " + df.format(cdCountAfterDiscount));

       }

       if(cdCount >= 120)

       {

           System.out.println("You have a 10% discount.");

           cdCountAfterDiscount = (cdCount *3.5)-(3.5*.1);

           System.out.println("The final price is " + df.format(cdCountAfterDiscount));

       }

   }

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Well your cpu should have a header on it for a pump you can look for close to the cpu it should be little metal rods sticking up where you could connect a fan or a cooling device to!
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4 years ago
What can be controlled through IoT? Choose four answers.
BaLLatris [955]

Answer:

Door locks

Light switches

Security cameras

Thermostat

Explanation:

IoT is internet of things that means network of different things that are interconnected through internet and make the decision with the help of Electronic sensors. The sensor sense the data from environment at different times and send this to the cloud (that may be the server). On the basis of this data different devices such as door looks, light switches, security cameras and thermostat take decisions with the help of controllers and change their current state.

<u>For Example</u>

In case of door look, there may be sensor that is sensing the finger prints of the user and after recognizing the person the door will be unlock. If unauthenticated user will try to open the lock a message has been sent to concerned. The training data of the the authorized persons is saved on the cloud, whenever someone tries to access, the data from sensor and cloud send to controller for making comparison and decision. So we can say that Door lock can be controlled IoT.

In case of light switches, there are few sensor available to sense the intensity of life. Different training values of that sensors are stored on the cloud. Whenever these sensors sense the light intensity, they send the data to the cloud contentiously, whenever the data match with darkness intensity, a signal has been send from controller to the switch to ON the lights.

Same as in cameras and Thermostat both are sending data to the cloud and controller. With the help of different image processing techniques and sensor camera will take the decision related to face recognition. Thermostat devices are also on and off by variation of temperature.

7 0
4 years ago
Given that an integer variable i and a floating-point variable f have already been declared and given values: Write a statement
Wewaii [24]

Answer:

Follows are the given statement to this question:

printf("i=%d f=%f", i, f);//print value

Explanation:

The full code to the given question:

code:

#include <stdio.h>//defining header file

int main()// main method

{

   int i;//declaring integer variable

   float f;//declaring float variable

   i=25; //assign integer value

   f=12.34;//assign float value

   printf("i=%d f=%f", i, f);//print value

   i=703;//assign integer value

   f=3.14159;//assign float value

   printf("\n");//for line break

   printf("i=%d f=%f", i, f);//print value

   return 0;

}

Output:

i=25 f=12.340000

i=703 f=3.141590

In the above-given code, the two variable "i and f" is declared, that holds integer and floating-point value in its respective variable and use the print method, to print "i and f" variables value.  

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Complete the method, isPerfectSquare(). The method takes in a positive integer, n. It returns a boolean that is true if n is a p
ratelena [41]

Answer:

  1. public class Square {
  2.    public static boolean isPerfectSquare(int n){
  3.        int sqrt_n = (int) Math.sqrt(n);
  4.        if(sqrt_n * sqrt_n == n ){
  5.            return true;
  6.        }else{
  7.            return false;
  8.        }
  9.    }
  10. }

Explanation:

Firstly, use sqrt method from Math package to calculate the square root of input n (Line 3). Cast the result to integer and assign it to sqrt_n variable.

Next, square the sqrt_n and check if it is equal to input n (Line 4). If so, return true, if not, return false (Line 4-8).

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