Answer: An operating system(OS) is an interface between the hardware and the user. An OS is built so that it could support other software. OS is a system software which is used to support other application softwares.
Explanation:
An operating system handles all the hardware of the system and allows users access to those hardware components with the help of application softwares.
An OS consist of many libraries and APIs which allows programmers to write and execute codes. There are many types of OS such as real time, multitasking, multi programming OS.
The OS is responsible for allocating memory, managing the hardware, distributing resources across different processors in an distributed system.
So all these features makes them different from application software. The OS is responsible allocating memory and hardware resources to these softwares.
QR codes were created to make a way for people to easily scan codes to get to a website. So you could scan (example) a movie poster to go to the website that has advertisements and tickets.
Answer:
You go to the "files" in your computer
It also depends on what kind of computer/laptop u have
Explanation:
Answer:
- import java.util.Scanner;
-
- public class Main {
- public static void main(String[] args) {
- Scanner input = new Scanner(System.in);
- String numStr = input.nextLine();
- double num;
- try{
- num = Double.parseDouble(numStr);
- }
- catch(NumberFormatException e){
- num = 0;
- System.out.println("Value entered cannot be converted to a floating point number.");
- }
- }
- }
Explanation:
The solution code is written in Java.
Firstly, we create a Scanner object and prompt user to input a number (Line 5-6). Next, we create a try -catch block and place the parseDouble inside the try block. If the input is invalid (e.g. "abc"), a NumberFormatException error will be thrown and captured and set the num to 0 and display the error message (Line 11 - 13).
Answer:
The answer is A or C. I hope this helps narrow down your answers.