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Alex
3 years ago
5

Safety glasses should be worn in which of the following situations?

Computers and Technology
1 answer:
N76 [4]3 years ago
8 0
When any substance is being heated. Safety glasses
You might be interested in
Write a telephone lookup program. Read a data set of 1,000 names and telephone numbers from a file that contains the numbers in
morpeh [17]

Answer:

See explaination

Explanation:

PhoneLookup.java

import java.io.FileReader;

import java.io.IOException;

import java.util.Scanner;

public class PhoneLookup

{

public static void main(String[] args) throws IOException

{

Scanner in = new Scanner(System.in);

System.out.println("Enter the name of the phonebook file: ");

String fileName = in.nextLine();

LookupTable table = new LookupTable();

FileReader reader = new FileReader(fileName);

table.read(new Scanner(reader));

boolean more = true;

while (more)

{

System.out.println("Lookup N)ame, P)hone number, Q)uit?");

String cmd = in.nextLine();

if (cmd.equalsIgnoreCase("Q"))

more = false;

else if (cmd.equalsIgnoreCase("N"))

{

System.out.println("Enter name:");

String n = in.nextLine();

System.out.println("Phone number: " + table.lookup(n));

}

else if (cmd.equalsIgnoreCase("P"))

{

System.out.println("Enter phone number:");

String n = in.nextLine();

System.out.println("Name: " + table.reverseLookup(n));

}

}

}

}

LookupTable.java

import java.util.ArrayList;

import java.util.Collections;

import java.util.Scanner;

/**

A table for lookups and reverse lookups

*/

public class LookupTable

{

private ArrayList<Item> people;

/**

Constructs a LookupTable object.

*/

public LookupTable()

{

people = new ArrayList<Item>();

}

/**

Reads key/value pairs.

atparam in the scanner for reading the input

*/

public void read(Scanner in)

{

while(in.hasNext()){

String name = in.nextLine();

String number = in.nextLine();

people.add(new Item(name, number));

}

}

/**

Looks up an item in the table.

atparam k the key to find

atreturn the value with the given key, or null if no

such item was found.

*/

public String lookup(String k)

{

String output = null;

for(Item item: people){

if(k.equals(item.getName())){

output = item.getNumber();

}

}

return output;

}

/**

Looks up an item in the table.

atparam v the value to find

atreturn the key with the given value, or null if no

such item was found.

*/

public String reverseLookup(String v)

{

String output = null;

for(Item item: people){

if(v.equals(item.getNumber())){

output = item.getName();

}

}

return output;

}

}

Item.java

public class Item {

private String name, number;

public Item(String aName, String aNumber){

name = aName;

number = aNumber;

}

public String getName(){

return name;

}

public String getNumber(){

return number;

}

}

input.txt

Abbott, Amy

408-924-1669

Abeyta, Ric

408-924-2185

Abrams, Arthur

408-924-6120

Abriam-Yago, Kathy

408-924-3159

Accardo, Dan

408-924-2236

Acevedo, Elvira

408-924-5200

Acevedo, Gloria

408-924-6556

Achtenhagen, Stephen

408-924-3522

Note: Replace all the "at" with at symbol

4 0
3 years ago
When you are given a set of tables and asked to create a database to store their data, the first step is to ________?
Vlad1618 [11]
Scan   the tables  to make a digital copy of them
6 0
3 years ago
Select the correct answer.
andriy [413]

Answer:

C. Rulers indicate the margins, tabs, and indents in a presentation slide.

Explanation:

The status bar appears at the bottom of the page, and it never displays options the options to style the slides. And the toolbar never displays the thumbnails of the slides, as well as the document area never provides a list of the commands for creating, formatting or editing the presentations. However, the rules do indicates the margins, tabs, and indents in a presentation slide. Hence C. is the right option.

8 0
3 years ago
Create union floatingPoint with members float f, double d and long double x. Write a program that inputs values of type float, d
Kitty [74]

Answer:

Here the code is given as follows,

#include <stdio.h>

#include <stdlib.h>

union floatingPoint {

float floatNum;

double doubleNum;

long double longDoubleNum;

};

int main() {

union floatingPoint f;

printf("Enter data for type float: ");

scanf("%f", &f.floatNum);

printf("\nfloat %f ", f.floatNum);

printf("\ndouble %f ", f.doubleNum);

printf("\nlong double %Lf ", f.longDoubleNum);

printf("\n\nBreakdown in Hex");

printf("\nfloat in hex %x ", f.floatNum);

printf("\ndouble in hex %x ", f.doubleNum);

printf("\nlong double in hex %Lx ", f.longDoubleNum);

printf("\n\nEnter data for type double: ");

scanf("%lf", &f.doubleNum);

printf("float %f ", f.floatNum);

printf("\ndouble %f ", f.doubleNum);

printf("\nlong double %Lf ", f.longDoubleNum);

printf("\n\nBreakdown in Hex");

printf("\nfloat in hex %x ", f.floatNum);

printf("\ndouble in hex %x ", f.doubleNum);

printf("\nlong double in hex %Lx ", f.longDoubleNum);

printf("\n\nEnter data for type long double: ");

scanf("%Lf", &f.longDoubleNum);

printf("float %f ", f.floatNum);

printf("\ndouble %f ", f.doubleNum);

printf("\nlong double %Lf ", f.longDoubleNum);

printf("\n\nBreakdown in Hex");

printf("\nfloat in hex %x ", f.floatNum);

printf("\ndouble in hex %x ", f.doubleNum);

printf("\nlong double in hex %Lx ", f.longDoubleNum);

return 0;

}

5 0
3 years ago
Assume that name has been declared suitably for storing names (like "Amy", "Fritz" and "Moustafa"). Assume also that stdin is a
aniked [119]

Answer:

void main(){

string name;

printf("Enter Name\n");

stdin("%s",&name);

Printf("\nGreetings %s",name);

}

Explanation:

Here scanf is represented by stdin and we are using that scanner object to read the string value from user.The value which we read are printed in a new line using printf .The format specifier %s in printf is replaced by name variable

3 0
3 years ago
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