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3 years ago

What is the output of the following Java code?int x = 1;do{System.out.print(x + " ");x--;}while (x > 0);System.out.println();

Computers and Technology

1 answer:

professor190 [17]3 years ago

5 0

Answer:

The output is 1.

Explanation:

int x = 1;

do{

System.out.print(x + " ");

x--;

}while (x > 0);

System.out.println();

The statement above is an example of a do-while loop which is always executed at least once.

In the above code snippet:

1 is assigned to x in the first line. Then the do keyword start the loop block. Inside the loop block, the value of x is output which is one (1). Then, the value of x is decreased by one, making x = 0. Then, the while keyword is reached where the condition is tested. The condition check whether x > 0 i.e whether 0 > 0. Off course, the condition is false and the loop is exited.

The last statement print a single line to the screen.

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BI systems have eliminated a common organizational problem, which is simultaneously having too much data but somehow not enough.

lyudmila [28]

Answer:

True

Explanation:

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BI systems helps in eliminating InfoObesity, by manging the data and filtration of the data with proper data structure to serve specific purposes.

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4 years ago

Write a method called classAttendence() that creates a 10-by-10 two-dimensional array and asks for user input to populate it wit

gladu [14]

Answer:

The method written in Java is as follows:

public static void classAttendance(){

Scanner input = new Scanner(System.in);

String[][] names = new String[10][10];

for(int i =0;i<10;i++){

for(int j =0;j<10;j++){

System.out.print("Student Name: "+(i+1)+" , "+(j+1)+": ");

names[i][j] = input.nextLine();

}

Explanation:

This defines the classAttendance() method

public static void classAttendance(){

Scanner input = new Scanner(System.in);

This declares the 2D array of 10 by 10 dimension as string

String[][] names = new String[10][10];

This iterates through the rows of the array

for(int i =0;i<10;i++){

This iterates through the columns of the array

for(int j =0;j<10;j++){

This prompts user for student name

System.out.print("Student Name: "+(i+1)+" , "+(j+1)+": ");

This gets the student name from the user

names[i][j] = input.nextLine();

}

The method ends here

}

<em>See attachment for complete program that include main method</em>

Download txt

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3 years ago

_________ are the special effects that you see when one slide changes to another in slide show view

lisabon 2012 [21]

Answer:

Transition effects

Explanation:

Transition effects are the special effects you see when one slide changes to another in slide show view.

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3 years ago

Tell what an array is and list two scenarios in which modeling data as a Java array (vs. another data type) would make sense.

OlgaM077 [116]

Answer:

The definition including its context of this discussion is outlined in the following clarification portion.

Explanation:

An array seems to be a storage research method to collect a set number of constant weight. Whenever the array was indeed generated, the length including its array has been determined. Its period is set after development.
Depending mostly on array description, the array may contain data structures and even some objects in something like a class. For primitive data types, the individual values become located at contiguous locations throughout the store.

Scenario:

If we're to preserve a summary, we could use the appropriate array size.
An individual can however preserve an object list.

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3 years ago

The Zootopia Police Department is recruiting new officers and has come up with an innovative equation to hire. They define hireS

Dahasolnce [82]

Answer:

#include<iostream>

#include<limits>

#include<iomanip>

using namespace std;

//function that returns true

//if there is invalid input like giving string as input

// for integer value.

bool isInvalidInput()

{

//return true if cin.fail

if(cin.fail())

{

//clear the buffer

cin.clear();

cin.ignore(numeric_limits<streamsize>::max(),'\n');

return true;

}

return false;

}

//function that calculates the hire score for given 3 parameters.

double calHireScore(double agility,double strength,double speed)

{

return (1.8*agility) + (2.16 * strength) + (3.24 * speed);

}

//calculate hire score for fox.

void calFoxHireScore()

{

double agility,strength;

cout<<"Enter Agility Value: ";

//get agility as input and validate it.

cin >> agility;

if(isInvalidInput() || agility <= 0)

{

cout<<"\nError: Agility value must be > 0"<<endl;

return;

}

cout<<"Enter Strength Value: ";

cin >> strength;

if(isInvalidInput() || strength <= 0)

{

cout<<"\nError: Strength value must be > 0"<<endl;

return;

}

cout<<"\nHire Score for Fox: "<<calHireScore(agility,strength,0)<<endl;

}

//function that asks input from user for

//calculating hire score for Sloth.

void calSlothHireScore()

{

double strength,speed;

cout<<"Enter Strength Value: ";

cin >> strength;

if(isInvalidInput() || strength <= 0)

{

cout<<"\nError: Strength value must be > 0"<<endl;

return;

}

cout<<"Enter Speed Value: ";

cin >> speed;

if(isInvalidInput() || speed <= 0)

{

cout<<"\nError: Speed value must be > 0"<<endl;

return;

}

cout<<"\nHire Score for Sloth: "<<calHireScore(0,strength,speed)<<endl;

}

//function that asks input from user for

//calculating hire score for Bunny.

void calBunnyHireScore()

{

double agility,speed;

cout<<"Enter Agility Value: ";

cin >> agility;

if(isInvalidInput() || agility <= 0)

{

cout<<"\nError: Agility value must be > 0"<<endl;

return;

}

cout<<"Enter Speed Value: ";

cin >> speed;

if(isInvalidInput() || speed <= 0)

{

cout<<"\nError: Speed value must be > 0"<<endl;

return;

}

cout<<"\nHire Score for Bunny: "<<calHireScore(agility,0,speed)<<endl;

}

//function to display menu for user.

void menu()

{

cout<<"\n1. Fox"<<endl;

cout<<"2. Bunny"<<endl;

cout<<"3. Sloth"<<endl;

cout<<"0. Quit"<<endl;

cout<<"Enter your choice: ";

}

//main method

int main()

{

int choice;

{

//asks choice

menu();

cin >> choice;

//if invalid input print erro message

if(isInvalidInput())

{

cout<<"\nError: Invalid choice enetered. Try Again\n";

}

else

{

cout<<"\n";

//if any one of the choices do accordingly

//for invalid choice print error mesage.

switch(choice)

{

case 1:

calFoxHireScore();

break;

case 2:

calBunnyHireScore();

break;

case 3:

calSlothHireScore();

break;

case 0:

cout<<"\nQutting...\n";

break;

default:

cout<<"Invalid choice entered."<<endl;

break;

}

}while(choice != 0);

return 0;

}

Explanation:

3 0

4 years ago