use fork in c code example

Example 1: c function fork

Hello, World!
    This is parent section [Process id: 1252].
    fork created [Process id: 1253].
    fork parent process id: 1252.

Example 2: what is fork in c

fork() in C. Fork system call is used for creating a new process, which is called child process, which runs concurrently with the process that makes the fork() call (parent process)