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3 years ago

What is an Operating System ??

Computers and Technology

1 answer:

NikAS [45]3 years ago

3 0

Hi Pupil Here's Your Answer :::

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An operating system is a system software, that after being initially loaded into the computer by a good program, manages all the other programs in a computer.

The application programs make use of the operating system by making request for services through a different Application Program Interface (API). In addition, users can interact directly with operating systems through a user interface such as command language or Graphical User Interface(GUI).

Functions Performed by the OS :

♤ The operating system acts as an interface between the computer hardware and the user.

♤ It manages computer's memory.

♤ It handles interrupts.

♤ It schedules the jobs.

♤ It manages Input/Output devices.

All major computer platforms (hardware and software) required and sometimes include an Operating System. Linux, Windows, Mac, VMS, OS/400 X, and z/OS are examples of operating systems.

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Hope this helps ........ ☺☺

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Read 2 more answers

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4 years ago

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Papessa [141]

Answer:

Explanation:

Sorry it is in Java, though you can covert it using converter

public class Exercise {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

int positives = 0; // Count the number of positive numbers

int negatives = 0; // Count the number of negative numbers

int count = 0; // Count all numbers

double total = 0; // Accumulate a totol

// Promopt the user to enter an integer or 0 to exit

System.out.print("Enter an integer, the input ends if it is 0: ");

int number = input.nextInt();

if (number == 0) { // Test for sentinel value

System.out.println("No numbers are entered except 0");

System.exit(1);

}

while (number != 0) {// Test for sentinel value

if (number > 0)

positives++; // Increase positives

else

negatives++; // Increase negatives

total += number; // Accumulate total

count++; // Increase the count

number = input.nextInt();

}

// Calculate the average

double average = total / count;

// Display results

System.out.println(

"The number of positive is " + positives +

"\nThe number of negatives is " + negatives +

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"\nThe average is " + average);

}

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3 years ago