Example 1: Parent and Child Processes#include #include #include #include At this point, create achild process. Now wehave two processes (twocopies of this C programare running concurrently):Parent process (rc > 0)Child process (rc = 0)starts from here.Terminate accordingto an error.Wait until the child processterminates.int main(int argc, char{}This C program is saved as Process.c.This C program is available in theGoogle Classroom.*argv[])printf("hello world (pid:%d)\n", (int) getpid());int rc = fork();if (rc < 0) {// fork failed; exitfprintf(stderr, "fork failed\n");exit(1);} else if (rc == 0) {To get the PID// child (new process)printf("hello, I am child (pid:%d)\n", (int) getpid());}return 0;} else {// parent goes down this path (original process)watt(NULL);printf("hello, I am parent of %d (pid:%d)\n",rc, (int) getpid());33 2. Modify the C program shown in Example 1 in Lecture Note 2 such that the new program willgenerate one parent process and three child processes (which all of them created by the parentprocess). The output of this program will show each child process PID and its parent process ID.For example,A child process with PID: 1001 (parent process PID: 1000).A child process with PID: 1002 (parent process PID: 1000).A child process with PID: 1003 (parent process PID: 1000).Because all of them have the same parent process, their parent process PID is the same.2.1) Take a screenshot of your program and put here.2.2) Compile and run your program. Take a screenshot of your program's output and put here.

The C code is given below with output screenshot

Modify the C program shown in Example 1 in Lecture Note 2 such that the new program will generate one parent process and three child processes (which all of them created by the parent process). The output of this program will show each child process PID and its parent process ID. For example, A child process with PID: 1001 (parent process PID: 1000). A child process with PID: 1002 (parent process PID: 1000). A child process with PID: 1003 (parent process PID: 1000). Because all of them have the same parent process, their parent process PID is the same. 2.1) Take a screenshot of your program and put here.

Modify the C program shown in Example 1 in Lecture Note 2 such that the new program will generate one parent process and three child processes (which all of them created by the parent process). The output of this program will show each child process PID and its parent process ID. For example, A child process with PID: 1001 (parent process PID: 1000). A child process with PID: 1002 (parent process PID: 1000). A child process with PID: 1003 (parent process PID: 1000). Because all of them have the same parent process, their parent process PID is the same. 2.1) Take a screenshot of your program and put here.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Q: Assume that you need to organize the data of books. Existing books should be rearranged so that only…

A: The Answer start from step-2.

Q: In this problem, you will develop an employee management system using Python. Here are the brief…

A: ANSWER:-

Q: We want to create a C++ program that takes a number of lab grades, quiz grades and project grades,…

A: code in c++ programming language

Q: Write a Elevator Simulator program in C! Without using goto statements! Simulate an…

A: The source code of the program #include <stdio.h>void elevator(int currentFloor, int…

Q: Now, write another function with the interface simulateRandomWalk(nsim,nstep,startPosition) that…

A: var Walker = function() { this.x = width/2; this.y = height/2;}; Walker.prototype.display =…

Q: lexical analyzer. You can use the regular definitions and actions in the page 143 of our text book.…

A: Computer Science Use Lex to produce a lexical analyzer. You can use the regular definitions and…

Q: How would you use personal firewalls and network firewalls to safeguard your home network?

A: According to the inquiry, A home firewall protects network-connected devices from internet threats.…

Q: Draw Flowchart of this program // C# program for implementation // of Lagrange's Interpolation…

A: Here is the flowchart the of above code. See below step for flowchart.

Q: Picture of the question is given to have a clearer understanding. Write a menu driven program in C…

A: Program description: option is the user input integer variable that takes from the user the option…

Q: PYTHON Call expressions, such as square(2), apply functions to arguments. When executing call…

A: create an environment diagram to visualize how it all unfolds:We initiate with a global frame…

Q: In the MIT School, there will be Election going on. For the Election, there is a condition that the…

A: Required:- In the MIT School, there will be elections going on. For the Election, there is a…

Q: Write a program in C to implement the sequential search algorithm of Chapter 3, Figure 3.1, except…

A: Declare integer variables to hold the number of elements to be entered, user inputted element and…

Q: Your company, A to Z Logistics, is in charge of packing shipping containers. Every container has two…

A: To convert the character to it's equivalent weight, using the following formula Input string…

Q: The Head Chef learns the level of motivation and satisfaction of his chefs. The chef's motivation…

A: Input/Output Explanation: The first line of the input contains the number T indicating the number of…

Q: In this practical assignment, you are going to implement a simple Rock, Paper, Scissors game in C++.…

A: Algorithm for Rock, Paper, Scissors Game1. Define the classes for Human, Computer, and Referee. -…

Q: In this question, you will consider the development of a Virtual Learning Environment (VLE) through…

A: Answer is

Q: Write a Elevator Simulator program in C! Without using goto statements! Simulate an…

A: Introduction Functions in C: The function is a set of statements that collectively perform a task.…

Concept explainers

Class

Object Oriented Programming System (OOPs) is a programming model built on the perception of “objects” that contains data and methods. The major purpose of Object Oriented Programming is to increase the maintainability and flexibility of programs. Object Oriented Programming gets together data and its behavior (methods) in a single location (object) which makes it easier to understand.

Question

Example 1: Parent and Child Processes
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
At this point, create a
child process. Now we
have two processes (two
copies of this C program
are running concurrently):
Parent process (rc > 0)
Child process (rc = 0)
starts from here.
Terminate according
to an error.
Wait until the child process
terminates.
int main(int argc, char
{
}
This C program is saved as Process.c.
This C program is available in the
Google Classroom.
*argv[])
printf("hello world (pid:%d)\n", (int) getpid());
int rc = fork();
if (rc < 0) {
// fork failed; exit
fprintf(stderr, "fork failed\n");
exit(1);
} else if (rc == 0) {
To get the PID
// child (new process)
printf("hello, I am child (pid:%d)\n", (int) getpid());
}
return 0;
} else {
// parent goes down this path (original process)
watt(NULL);
printf("hello, I am parent of %d (pid:%d)\n",
rc, (int) getpid());
33

2. Modify the C program shown in Example 1 in Lecture Note 2 such that the new program will
generate one parent process and three child processes (which all of them created by the parent
process). The output of this program will show each child process PID and its parent process ID.
For example,
A child process with PID: 1001 (parent process PID: 1000).
A child process with PID: 1002 (parent process PID: 1000).
A child process with PID: 1003 (parent process PID: 1000).
Because all of them have the same parent process, their parent process PID is the same.
2.1) Take a screenshot of your program and put here.
2.2) Compile and run your program. Take a screenshot of your program's output and put here.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Code

Code Screenshot

OUTPUT

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Programming language is C. I would really be appriciate if you could help me with this. Please provide me with your cashapp, so I can tip you for your work. THANK YOU:) In this project, we shall simulate the operations of an ATM machine. Suppose you’re in charge of this simulation and here is a scenario of what is required to do: The customer will be assigned a random or fixed number for his/her balance. First, the customer is prompted to enter his personal identification number pin (for this case study, we test only if this pin is formed by 4 digits! otherwise, a message like “Invalid PIN, try again . . .” will be displayed) and the user is re-prompted to enter the pin. The customer is given three chances to enter his pin. If he/she fails during the three trials you display a message like “Sorry you can’t continue, contact your bank for assistance!” If the pin is correct (formed by 4 digits), then the system will ask the customer for the receipt ( 1 for YES and 2 for NO ) and a menu…
By implementing the concepts of Classes and Objects, write a C++ program that determines the slope of a line from the coordinates, P(x,y), of the 2 points. The coordinates of the 2 points: P1 (x1, y1) and P2 (x2, y2) are to he entered from the keyboard. The slope, m, of the line is computed as: m=(y2-y1/x2-x1) Accomplish the following for the given class diagram: 1.) Create the class implementation using C++ 2.) Using the constructor, create 2 objects, P1 and P2, from class Point and store them in the heap memory. 3.) Implement the functions of the 2 objects. NOTE: The member function setXY is used to enter the values of x and y from the keyboard. Sample input/output display: Enter the coordinates of the 1st point (x1 y1): 1 1 Enter the coordinates of the 2nd point (x2 y2): 5 4 The slope of the line, m=0.75
Elevator (or Lift as referred to by the English folks) Simulator in C language program.Simulate an Elevator-Controller Program. The Elevator should be able to travel between five floorsnamely Ground, 1st, 2nd, 3rd, 4th and 5th floors. The elevator can travel going up (unless they areat the 5th floor) or going down (unless they are at the ground floor). The elevator can only containone passenger (which is the current user of the program). Initially the elevator begins and loads atthe Ground Floor. If the user wants to travel to the 5th floor, the elevator shall go up to the saidfloor. It is the option of the user if they want to alight the elevator or not on the 5th floor or anyfloor on the way. Realistic rules should apply: If the user alights at the 4th floor, when they ride the elevator again, itshould begin traveling from the 4th floor and from there choose to go up or down. Your programshould have some validation: meaning, only the valid characters should be received by the…
Using UML class diagrams, create a design for the following (you can defer declaring the types for any instance variables and instance methods as long as you represent the concepts appropriately). NB: You may hand-draw your diagram or use a drawing program (your choice). Upload your finished answer for (a) and (b) as one file. (a) An Employer has one or more Employees. An Employee has exactly one Employer. Employees have attributes for their name, salary and job title (b) We are producing a vehicle registration system for the local DMV/RMV. Model the following using a UML class diagram. Read the entire specification before proceeding (this is ONE question, broken into 4 segments for readability): (i) Our interface (protocol/contract) IVehicle states that all vehicles can register() and calculateExciseTax(). These operations are public and the Vehicle contract is stable – it will not change. (ii) We think we’ll be able to take advantage of code-reuse, so your team must introduce an…
Writing C++ Code for a Hybrid Market Prize System. A New hybrid market is launching in Muscat and you are asked to create a prize system for the blind customers based on the amount of his invoice. The scenario of giving the prize is as follow: • The market owner should enter the Secret amount (SM), Above Percentage (AP). Lower Percentage (LP) and Prize at the start of executing the system. • The cashier should enter the following information for five customers in a 2D-Array 5 X 3: The Invoice Number, the Invoice Amount, and Customer Name • The system needs to print the number and the amount of each invoice with the customer name. In addition to the prize amount, such that: o it the Invoice Amount is equal to (SM) the record of the customer should be printed with 100% of the Prize. o If the Invoice Amount is Larger than (SM) by (AP) the record of the customer should be printed with 50% of the Prize. o If the Invoice Amount is larger than (SM) by (LP) the record of the customer should be…
We wish to implement a system that allows the management of Employees and Students. As a first step. you need to implement the above UML diagrams Notes: . ZOOM . PERSON, EMPLOYEE and STUDENT should be public static constants The no-arg constructor will initialize ID, firstName and lastName to their respective null values. It will set personType to PERSON, and sortorder to LAST_NAME The overloaded constructor will assign each parameter to its respective field. sortorder will also be set to LAST_NAME toString() will output type, ID, firstName and lastName, all tab separated. This is an override method equals() will compare if the current object and the parameter contain the same values. This is an override method compareTo() compares the current object and the parameter. This is an override method. It will be used to sort objects Needs the Comparable interface O Will only compare fields depending on the sortorder. For example, if the sortorder is TYPE, it should then compare the…