What does CTR stand for?

Book checkout scenario at a library: The Worker tells the System the identity of a patron who wishes to check out books. The Sys

Alinara [238K]

Answer:

Check the explanation

Explanation:

To solve the above question.

The two valid classes are:

1. Patron_identity

2. Books

Class generalization can be between Books and Patrol_identity to create a new superclass for All The Books that this patron has ever checked out.

Two valid associations can be between:

1.Patron_identity and books

2.Books and library catalogue

8 0

3 years ago

On a piano, a key has a frequency, say f0. Each higher key (black or white) has a frequency of f0 * rn, where n is the distance

lesantik [10]

Answer:

In C:

#include <stdio.h>

#include <math.h>

int main(){

float f0,r,temp;

r = pow(2.0,1.0/12);

printf("f0: "); scanf("%f", &f0);

temp = f0;

for(int i = 0; i<=4;i++){

f0 = f0 * pow(r,i);

printf("%.2lf ", f0);

f0 = temp; }

return 0;

}

Explanation:

This declares f0, r and temp as float

float f0,r,temp;

This initializes r to 2^(1/12)

r = pow(2.0,1.0/12);

This prompts the user for f0

printf("f0: "); scanf("%f", &f0);

This saves f0 in temp

temp = f0;

This iterates the number of keys from 0 to 4

for(int i = 0; i<=4;i++){

This calculates each key

f0 = f0 * pow(r,i);

This prints the key

printf("%.2lf ", f0);

This gets the initial value of f0

f0 = temp; }

return 0;

8 0

3 years ago

What is the process of attaching gage blocks to each other

const2013 [10]

The blocks are joined by a sliding process called wringing, which causes their ultra-flat surfaces to cling together.

7 0

3 years ago

Define the missing method. licenseNum is created as: (100000 * customID) licenseYear, where customID is a method parameter. Samp

g100num [7]

Answer:

I am writing the program in JAVA and C++

JAVA:

public int createLicenseNum(int customID){ //class that takes the customID as parameter and creates and returns the licenseNum

licenseNum = (100000 * customID) + licenseYear; //licenseNum creation formula

return(licenseNum); }

In C++ :

void DogLicense::CreateLicenseNum(int customID){ //class that takes the customID as parameter and creates the licenseNum

licenseNum = (100000 * customID) + licenseYear; } //licenseNum creation formula

Explanation:

createLicenseNum method takes customID as its parameter. The formula inside the function is:

licenseNum = (100000 * customID) + licenseYear;

This multiplies 100000 to the customID and adds the result to the licenseYear and assigns the result of this whole expression to licenseNum.

For example if the SetYear(2014) means the value of licenseYear is set to 2014 and CreateLicenseNum(777) this statement calls createLicenseNum method by passing 777 value as customID to this function. So this means licenseYear = 2014 and customID = 777

When the CreateLicenseNum function is invoked it computes and returns the value of licenseNum as:

licenseNum = (100000 * customID) + licenseYear;

= (100000 * 777) + 2014

= 77700000 + 2014

licenseNum = 77702014

So the output is:

Dog license: 77702014

To call this function in JAVA:

public class CallDogLicense {

public static void main(String[] args) {//start of main() function

DogLicense dog1 = new DogLicense();//create instance of Dog class

dog1.setYear(2014); // calls setYear passing 2014

dog1.createLicenseNum(777);// calls createLicenseNum passing 777 as customID value

System.out.println("Dog license: " + dog1.getLicenseNum()); //calls getLicenseNum to get the computed licenceNum value

return; } }

Both the programs along with the output are attached as a screenshot.

3 0

3 years ago

Read 2 more answers

A form of Internet identity theft involving phony e-mail messages asking customers to update their credit card numbers, account

irina [24]

Answer: Phishing

Explanation:

Phishing is a form of identity theft involving phony email messages asking customers to update credit, debit, cards, accounts passwords, and all whole of personal information. It is still one of the relevant form of identity theft whereby personal information is taken away in form of electronic communication or messages.

One example could be when a person receives a mail from xyz.com and ask him/her to click on a page. upon clicking on it the person will be redirected to another page. in that page several details would be there such as username and password, bank account details. So once all these details are entered in the web page all our personnel information will leaked into the servers of the hackers and could lead to serious troubles. Sometimes phishing is also in form of fake social networking website which resembles exactly to that of the original one.

So Phishing is a for of identity theft.

3 0

3 years ago