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Taya2010 [7]
3 years ago
14

Which of the following statements is true?

Computers and Technology
1 answer:
jeka57 [31]3 years ago
7 0

Answer: Constructors can specify parameters but not return types.

Explanation:

public class Student {

 int roll_no;

 public Student(int a) {

   roll_no = a;

 }

public static void main(String[] args) {

   Student abs = new Student(10);

   System.out.println(abc.roll_no);

 }

}

In the above code we have illustrated the working of constructors. We have a class with the name Student. then a constructor is created of the class called as the class constructor. In the main we create an object of the class and with this object we invoke the constructor and also pass a parameter. Here in the code we are passing the roll no of the student.

So we can say that constructor is called during the runtime when the object created invokes the constructor so a constructor can have many arguments but it does not have a return type.

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!!! 20 points !!!!!
puteri [66]

Answer: I need more info to answer this question

Explanation:

8 0
2 years ago
Given four inputs: a, b, c & d, where (a, b) represents a 2-bit unsigned binary number X; and (c, d) represents a 2-bit unsi
Amiraneli [1.4K]

Answer:

z = a.c' + a.b.d' + b.c'.d'

Explanation:

The truth table for this question is provided in the attachment to this question.

N.B - a' = not a!

The rows with output of 1 come from the following relations: 01 > 00, 10 > 00, 10 > 01, 11 > 00, 11 > 01, 11 > 10

This means that the Boolean expression is a sum of all the rows with output of 1.

z = a'bc'd' + ab'c'd' + ab'c'd + abc'd' + abc'd + abcd'

On simplification,

z = bc'd' + ab'c' + ac'd' + ac'd + abc' + abd'

z = ac' + abd' + bc'd'

Hope this helps!

6 0
3 years ago
Which function of NOS involves swapping programs and files
yaroslaw [1]
The answer is Multitasking. NOS (Network Operating System) has the ability to execute more than one program at a time.  It allows different programs to operate on the CPU, effectively giving each program a virtual copy of the CPU while preventing the program from directly manipulating the hardware. The NOS switches the CPU time from one task  to another in order to create the idea that several tasks are being executed at the same time, but in reality, only one program is being executed. 
6 0
3 years ago
Project Description The Department plans to purchase a humanoid robot. The Chairman would like us to write a program to show a g
artcher [175]

Answer:

C++ code is explained below

Explanation:

#include <iostream>

#include <iomanip>

using namespace std;

int main()

{

// Variables to store inputs

string robot_name = "Nao";

string visitor_name;

int age, first_num, second_num;

// Constant variable initialisation for programmer name

const string programmer_name = "XXXXXXXX";

// Constant variable initialisation for assignment number

const string assignment_num = "123546";

// Constant variable initialisation for due date

const string due_date = "16 August, 2019";

// Displaying robot's name as script

cout << "Hello, welcome to Montgornery College!";

cout << "My name is " << robot_name << " . May I have your name?" << "\n\n";

// Taking visitor's name as input from the visitor

cin >> visitor_name;

// Displaying vistor's name as script

cout << "\n\nNice to have your with us today, " << visitor_name << "! ";

cout << "Let me impress you with a small game.";

cout << "Give me the age of an important person or a pet to you. ";

cout << "Please give me only a number!" << "\n\n";

// Taking human age as input from the visitor

cin >> age;

// Displaying human's age as script

cout << "\n\nYou have entered " << age << ". If this is for a person,";

cout << " the age can be expressed as " << age << " years or ";

// Computing months, days, hours, minutes and seconds from age input

double months = age*12;

double days = months*30;

double hours = days*24;

double minutes = hours*60;

double seconds = minutes*60;

// Computing dogs and fish age from human's age

double dogs_age = 7*age;

double gold_fish_age = 5*age;

// Displaying months, hours, minutes, hours and seconds as script

cout << months << " months or about " << days << " days or";

cout << " about " << fixed << setprecision(0) << hours << " hours or about " << minutes;

cout << " or about " << fixed << setprecision(0) << seconds << " seconds. If this is for a dog.";

// Displaying dogs age and gold fish age as script

cout << " it is " << dogs_age << " years old in human age.";

cout << " If this is for a gold fish, it is " << gold_fish_age;

cout << " years old in human age" << "\n\n";

cout << "Let's play another game, " << visitor_name << "!";

cout << "Give me a whole number." << "\n\n";

// Taking first whole number from the visitor

cin >> first_num;

cout << "\nVery well. Give me another whole number." << "\n\n";

// Taking second whole number from the vistor

cin >> second_num;

// Computing sum and division for displaying in the script

double sum = first_num+second_num;

double division = first_num/second_num;

float floatDivision = (float)first_num/second_num;

// Displaying sum and division script

cout << "\nUsing the operator '+' in C++,";

cout << " the result of " << first_num << " + " << second_num;

cout << " is " << sum << ". Using the operator '/', the result ";

cout << "of " << first_num << " / " << second_num << " is " << division;

cout << "; however, the result of " << first_num << ".0 /" << second_num;

cout << ".0 is about " << floatDivision << "." << "\n\n";

cout << "Do you like the games, " << visitor_name << "?";

cout << " If you do, you can learn more by taking our classes.";

cout << ". If you don't, I am sad, You should talk to our Chairman!" << "\n\n";

// Displaying Programmer Name, Assignment Number and due date to output screen

cout << "Programmer Name : " << programmer_name << endl;

cout << "Assignment Number : " << assignment_num << endl;

cout << "Due Date : " << due_date << endl;

 

return 0;

}

4 0
3 years ago
Can I have some help?
Ad libitum [116K]
I believe its A as the image provided says plain message
6 0
2 years ago
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