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2 years ago

10

Print "userNum1 is negative." if userNum1 is less than O. End with newline Convert userNum2 to 0 if userNum2 is greater than 8.

Otherwise, print "userNum2 is less than or equal to 8.. End with newline. 1 public class UserNums 2public static void main (String args) int userNum1; int userNum2 userNumt - -1; userNum2 7; Your solution goes here / 10 System.out.printin("userNum2 is "userNum2);

Computers and Technology

1 answer:

Butoxors [25]2 years ago

8 0

Answer:

import java.util.Scanner;

public class num1 {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

System.out.println("Enter User name 1 and 2");

int userNum1 = in.nextInt();

int userNum2= in.nextInt();

if(userNum1<0){

System.out.println("userNum1 is negative.");

}

else if(userNum2>8){

userNum2 =0;

}

else{

System.out.println("userNum2 is less than or equal to 8..");

}

}

}

Explanation:

This is implemented in Java programming language

Using the scanner class, the user is prompted to enter two numbers

These are saved in the variable userNum1 and userNum2 respectively.

If, else if and else statements are then used according to the specifications given in the question.

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A network technician sets up an internal dns server for his local network. When he types in a url which is checked first

VLD [36.1K]

Answer:

The first thing that the browser checks is the cache for the DNS record to find the corresponding IP address.

Explanation:

After the technician sets up the internal DNS server for his local network, the first thing that is checked when he types a website into the url of a browser is the cache to look for corresponding IP addresses.

DNS which means Domain Name System is a database that maintains the website name (URL) and the IP address that it is linked to. There is a unique IP address for every URL (universal resource locator).

Internal DNS servers store names and IP addresses for internal or private servers

8 0

2 years ago

Write a flowchart and C code for a program that does the following: Within main(), it asks for the user's annual income. Within

Fiesta28 [93]

Answer:

I am writing a C program:

#include <stdio.h> //to use input output functions

void printIt(double annual_in){ //function printIt

if(annual_in >90000) //check if the income is greater than 90000

printf("Congratulations. Doing great!"); //print this message if income value is greater than 90000

else //if annual income is less than 90000

printf("You WILL make $50,000, if you keep going"); } //print this message if income value is less than 90000

int main() //start of main() funciton body

{ double income; //declares a double type variable income to hold annual income value

printf("Enter annual income: "); //prompts user to enter annual income

scanf("%lf",&income); //reads income value from user

printIt(income); } // calls printIt method by passing input income to that function

Explanation:

The program is well explained in the comments mentioned with each statement of the program. The flowchart is attached.

First flowchart flow1 has a separate main program flowchart which reads the income and calls printIt function. A second flowchart is of prinIt() method that checks the input income passed by main function and displays the corresponding messages and return.

The second flowchart flow2 is the simple flowchart that simply gives functional description of the C program as flowchart is not where giving function definitions is important. Instead of defining the function printIt separately for this C program, a high-level representation of functional aspects of this program is described in second flowchart while not getting into implementation details.

7 0

2 years ago

In a Diffie-Hellman Key Exchange, Alice and Bob have chosen prime value q = 19 and primitive root a = 10. If Alice's secret key

34kurt

Answer:

a) 6

b) 11

c) 11

Explanation:

Given

Prime value q =n= 19

primitive root (a) =10

Alice secret key = 4

Bob secret key = 6

a) The value Alice Sends to Bob

aPrivate key of Alice mod n

= 10^4 mod 19

= 10000 mod 19

=6

b)The value Bob sends to Alice

aPrivate key of Bob mod n

= a3 mod n

= 10^6 mod 19

=1000000 mod 19

= 11

c)

Both the parties calculate the value of secret key at their respective side.

secret key obtained by Alice

= 11

secret key obtained by Bob

= 11

Finally, both the parties obtain the same value of secret key.

The value of common secret key = 17

6 0

2 years ago

Find a 95% confidence interval for the mean failure pressure for this type of roof panel.The article "Wind-Uplift Capacity of Re

aliya0001 [1]

Answer:

The 95% confidence interval would be given by (2.351;3.525)

Explanation:

1) Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

2) Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (3)

The mean calculated for this case is $\bar X=2.938$

The sample deviation calculated $s=0.472$

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=5-1=4$

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,4)".And we see that $t_{\alpha/2}=2.78$

Now we have everything in order to replace into formula (1):

$2.938-2.78\frac{0.472}{\sqrt{5}}=2.351$

$2.938+2.78\frac{0.472}{\sqrt{5}}=3.525$

So on this case the 95% confidence interval would be given by (2.351;3.525)

5 0

2 years ago

Exercise 3.6.9: 24 vs. "24"5 points

Anton [14]

This is all you need to do for this one add quotes around the number to make it a string. Then for the question I don't know if you need to answer it but I said that when there is only one string it creates and addition problem of 24 + 24 and then when there are two strings it puts them right next to each other making it look like the number 2424.

7 0

2 years ago