Consider the following piece of C code running on UNIX: void main() { int pid fork(); if (pid == 0) fork(); pid fork(); if (pid != 0) fork(); exit(0); How many child processes are created when executing this program? Your answer must only contain a number. Answer:
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Consider the following piece of C code running on UNIX:How many child processes are created when executing this
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- Write a complete C program in Linux such that: The parent process creates two child processes (i.e., first child and second child) The first child process doesn’t create any other child process. The second child process creates another child process (i.e., third child). The parent process prints: “0” The first child prints “1” The second child process prints “2” The third child process, which is created by the second child process, prints “3”please write with proper explanation. Question half solution is here please write what is main disadvantages of this approach? Half solve questions: Mutual Exclusion: Mutex is an abbreviation for Mutual Exclusion. It is a programme object that prevents multiple users from accessing a shared resource at the same time. When a process accesses a shared variable, it is said to be in the critical section. When no two processes are present in the critical section at the same time, this is referred to as Mutual Exclusion or Mutex. while (true) { semaphore sem = S; while (S <= 0) do no operation { S = S-1; wait (S); } /*critical section*/ while (S > 0) { S = S+1; signal (S); } /*remainder section*/ }Concurrent Server Programming TITLE: Quiz Game In this assignment you are asked to write a phyton system to support an online math contest. The contest consists of answering the maximum quantity of sums in 30 seconds. This is done in a concurrent way, which means, that there are three participants answering at the same time. The participant with most correct answers WINS. The jury is responsible in starting up the server, after that they wait for the clients. When the three clients are connected, they must send the message: READY to the server. When the server receives the three READY from the clients, the contest starts. At the end of the program, the server must show the results .Execution (SERVER) - Please provide me the complete code and solution to arrive to the results below.python3 MathinikServer 192.168.1.2 Connected192.168.1.2 is Anne192.168.1.4 Connected192.168.1.4 is Billy192.168.1.3 Connected192.168.1.3 is MarkMark is READYAnne is READYBilly is READYStarting Contest…Contest…
- code this in RUBY programming languageA good string is a string or a substring that starts with the character "g" and ends with the character "d". For a given string, write a program to find the number of "good substrings" of a given string. Note - A substring of a string is a contiguous subsequence of that string. The list of all non-empty substrings of the string "apple" would be "apple", "appl", "pple", "app", "ppl", "ple", "ap", "pp", "pl", "le", "a", "p", "p", "I", and "e" There will be multiple test cases running so the Input and Output should match exactly as provided. The base output variable result is set to a default value of -404 which can be modified. Additionally, you can add or remove these output variables. Input Format The first line contains the string S. Sample Input godk - denotes S Constraints 1 <= len|S| <= 100 Output Format The output contains a single integer denoting the number of good substrings of the given string. Sample Output 1 Explanation In the given string, only one substring "god" is good.…Please Answer in C++ only A Rajesh teaches a cooking class. The course is attended by NN students, numbered 11 to NN. The cook must participate in the presence before each class, i.e. call out the names of the students one by one and indicate which students are present. Each student has a first and last name. To save time, Rajesh only wants to call up students' first names. However, if there are multiple students with the same first name, the Rajesh must call out the full names (first and last names) of all those students. For any student who does not share a first name with any other student, the cook can still only call that student's first name. Help the Rajesh decide for each student whether to call that student's full name or just their first name. Input 1 1 hasan jaddouh Output hasan
- using c++ In this assignment you are going to implement your own version of university library system,Thesystem will have two different sides , the first one is to help the librarian to do his job and the other side for admin to manage every one permissions in the system , so You should provide the following features in your system: Admin view o Add/remove Studentso Add/remove librarian o Add/remove other admins Librarian viewo Add/Delete bookso Issue/Return bookso View bookso View Issued bookso Log in /log outo Search for the book(id/name) Simple backend for your system , You could use a file each row should represent itemo Books File should be something like:Id , Book Name, Author Name, Available quantity, Issued Quantity1,Oliver Twist, Charles Dickens,98,2In the previous the first row was the name of each column , you can do that or handle it in your code , id =1 , Book Name =Oliver Twist ..Etc. Tables neededo Books Id Book Name Author Name Available quantity Issued…process( A, B ) begin Z <= (A or not(B)) and C; end process; In this example, what happens to Z if A or B change? If C changes, what will happen to Z?Description: In this programming, your goal is to create a C program that can be used to check the validity and analyse a given MAC address. You will mainly do the following. You will ask the user to enter a MAC address and you will check if it is valid. If it is valid you will allow the user to analyse the given MAC address.
- IN java YOUR TASK IS TO IMPLEMENT A JAVA APPLICATION WHICH WILL FUNCTION AS A TYPE OF STUDENT REGISTRATION DATABASE WHICH WILL ENABLE AN ADMINISTRATIVE USER TO EITHER CREATE OR DELETE A STUDENT ACCOUNT IN THE DATABASE IN ORDER TO STORE THE FOLLOWING DETAILS:- (1)THE STUDENT’S NAME, (4) THE STUDENT’S ID NUMBER, (3) A LIST OF THE COURSES WHICH THE STUDENT HAS TAKEN ALONG WITH THE CORRESPONDING GRADES FOR THESE COURSES. NOTE: WHEN THE VALUE -1 IS ENTERED, THE APPLICATION WILL TERMINATE. please check the attached imageFor this C Program, I am getting the error "Expected an identifier" on line 18.Write code in c++ and Dont use string . Use #include<iostream> header file only.