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    The fork() system call in C++ is a powerful tool for creating new processes. It is commonly used in Unix-like operating systems to duplicate the current process, resulting in two identical processes running concurrently: the parent process and the child process12.

    Basic Usage of fork()

    The fork() function creates a child process that is a copy of the parent process. The child process inherits copies of the parent's resources, such as memory and file descriptors, but has its own address space. Here is a basic example of using fork() in C++:

    #include <iostream>
    #include <unistd.h>

    int main() {
    pid_t pid = fork();

    if (pid == -1) {
    perror("fork");
    exit(EXIT_FAILURE);
    } else if (pid == 0) {
    std::cout << "Child process\n";
    } else {
    std::cout << "Parent process\n";
    }

    return 0;
    }
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  2. GeeksForGeeks
    https://www.geeksforgeeks.org/create-processes-with-fork-in-cpp

    Create Processes with Fork in C++ - GeeksforGeeks

    Learn how to use fork() system call to create child processes from the parent process in C++. See examples, syntax, significance and output of fork() function.
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  3. GeeksForGeeks
    https://www.geeksforgeeks.org/fork-syst…

    fork() in C - GeeksforGeeks

    Oct 11, 2024 · Learn how to use the fork () system call to create a new process in Linux and Unix systems. See examples, explanations, and related articles on …

    • Estimated Reading Time: 4 mins
    • man7.org
      https://www.man7.org/linux/man-pages/man2/fork.2.html

      fork(2) — Linux manual page - man7.org

      Tags:
      Unix Fork Process
      Fork Man
      Linux Fork Example
      Linux Tutorial On Forks
    • Delft Stack
      https://www.delftstack.com/howto/cpp/cp…

      How to Create Processes With Fork in C++ - Delft Stack

      Feb 23, 2024 · The article highlights the importance and versatility of the fork() system call in C++ for creating processes. It explores various methods, including basic fork(), multiple forks, and automatic children cleanup, demonstrating …

      Tags:
      System call
      Fork Processes
      Fork in C
      Create N Child Process Using Fork
    • Stack Overflow
      https://stackoverflow.com/questions/985051

      c - What is the purpose of fork()? - Stack Overflow

      c - What exactly does fork return?Nov 1, 2016
      What is fork and pipe in C and can they be used in C++?
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      Fork Processes
      Unix Fork Process
    • thelinuxcode.com
      https://thelinuxcode.com/fork-function-cpp

      Fork() System Call in C++ - An Expert Guide – TheLinuxCode

      Tags:
      System call
      Fork Processes
    • People also ask
      What is a fork function in C++?
      It allows building complex, robust systems out of smaller isolated processes communicating together. The fork () function is declared as follows in C++: To use it, simply call fork () from a process: This duplicates the parent process, returning the child‘s PID to the parent and 0 to the child.

      Fork() System Call in C++ - An Expert Guide – TheLinuxCode

      thelinuxcode.com
      What is a system call fork?
      System call fork () is used to create processes. It takes no arguments and returns a process ID. The purpose of fork () is to create a new process, which becomes the child process of the caller. After a new child process is created, both processes will execute the next instruction following the fork () system call.

      c - What is the purpose of fork()? - Stack Overflow

      stackoverflow.com
      How to use fork() in C++?
      Here are some best practices when using fork () in your C++ programs: Check return values of fork () properly in both parent and child. Close unnecessary resources like files and sockets in child after forking. Avoid modifying parent‘s state in child to prevent side-effects. Use IPC mechanisms like pipes between parent and child to exchange data.

      Fork() System Call in C++ - An Expert Guide – TheLinuxCode

      thelinuxcode.com
      Why is the fork() system call important in C++?
      Using the fork() system call in C++ is important for creating processes because it allows a parent process to spawn child processes, enabling concurrent execution of tasks. This capability is essential for building scalable and efficient applications that can perform multiple tasks simultaneously.

      How to Create Processes With Fork in C++ | Delft Stack

      delftstack.com
      What happens if fork() fails in C++?
      If fork() fails, it returns -1, leading to the else block, where we print an error message. Executing this code demonstrates the basic usage of the fork() system call in C++. It showcases how a process can create a child process, enabling concurrent execution of tasks.

      How to Create Processes With Fork in C++ | Delft Stack

      delftstack.com
      What happens when Fork() is called in Linux?
      When fork () is called, the Linux kernel performs several steps to create the new child process: Clone memory – The parent‘s virtual memory space is replicated for the child. Copy file descriptors – The parent‘s open files and sockets are copied. Process creation – The OS allocates new process resources and PID.

      Fork() System Call in C++ - An Expert Guide – TheLinuxCode

      thelinuxcode.com
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    • GeeksForGeeks
      https://www.geeksforgeeks.org/creating-multiple-process-using-fork

      Creating multiple process using fork() - GeeksforGeeks

      Tags:
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      Fork Processes
      Fork in C
      Unix Fork Process
    • netlify.app
      https://cpp-by-example.netlify.app/basics/fork

      Fork - C++ by example

      Tags:
      Fork
      C++
    • mtu.edu
      https://www.csl.mtu.edu/.../process/fork/…

      The fork() System Call - Michigan Technological …

      Learn how to use the fork () system call to create processes in C++. See examples, explanations, and diagrams of how the parent and child processes execute and share the address space.

      Tags:
      System call
      The Fork Function
    • geeksforgeeks.org
      https://www.geeksforgeeks.org/using-fork-produce-1...

      Using fork() to produce 1 parent and its 3 child processes