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    Creating a child process in C++ can be achieved using different methods depending on the operating system. Below are two common approaches: one for Unix-based systems using fork() and another for Windows using CreateProcess().

    Using fork() (Unix/Linux Systems)

    The fork() system call creates a new process by duplicating the current process. The child process runs independently but shares the same code as the parent.

    Example Code:

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

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

    if (pid == -1) {
    perror("fork failed");
    exit(EXIT_FAILURE);
    } else if (pid == 0) {
    // Code executed by the child process
    std::cout << "Child Process ID: " << getpid() << std::endl;
    } else {
    // Code executed by the parent process
    std::cout << "Parent Process ID: " << getpid() << std::endl;
    }

    return 0;
    }
    Gekopieerd.

    Output Example:

    Parent Process ID: 1234
    Child Process ID: 1235
    Gekopieerd.
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  2. GeeksForGeeks
    https://www.geeksforgeeks.org › cpp › create-pr…Dit resultaat vertalen

    Create Processes with Fork in C++ - GeeksforGeeks

    24 nov. 2022 · fork () is a system call that creates a child process from the parent process. Whenever we call fork () from the parent program, a child process is created that has the exact copy of the address space. The important thing to …

  3. Delft Stack
    https://www.delftstack.com › howto › cpp › cpp-f…Dit resultaat vertalen

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

    23 feb. 2024 · 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 …

  4. Stack Overflow
    https://stackoverflow.com › questionsDit resultaat vertalen

    c - Multiple child process - Stack Overflow

    can someone help me about how to create multiple child processes which have the same parent in order to do "some" part of particular job? for example, an external sorting algorithm which is applied with …

    • Recensies: 2

      Codevoorbeeld

      } else if (pids[i] == 0) {
        DoWorkInChild();
        exit(0);
      }...
      c++ - Use system () to create independent child process7 aug. 2018
      how to create two processes from a single Parent30 jun. 2011
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    • thelinuxcode.com
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      Fork() System Call in C++ - An Expert Guide – TheLinuxCode

      The fork () system call allows a process to create a new "child" process that‘s identical to itself. It originates from Unix and is defined in unistd.h header in C++.

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      • The forksystem call will allow our process to create a new process, which will be its exact clone and executed simultaneously. In this way, our initial process will be the parent and the new process, its child. In fact, the very name of the system call, fork, is like the fork of a family tree. Let’s take a look at the prototype of fork, from the <u...
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      Using fork () to produce 1 parent and its 3 child processes

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      fork () in C - GeeksforGeeks

      23 jul. 2025 · After a new child process is created, both processes will execute the next instruction following the fork () system call. The child process uses the same pc (program counter), same CPU registers, and same open files which use in the …

    • stackoverflow.com
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      How to use Fork () to create only 2 child processes?

      6 jun. 2012 · When a fork statement is executed by the parent, a child process is created as you'd expect. You could say that the child process also executes the fork statement but returns a 0, the …

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