Question

Discuss your understanding using an example:

• How to create a child process using fork, running a C function using the child process, and parent process learning using the waitpid function to conclude that the child process has completed. This will help you with A07.
• Discuss your understanding of the Example in Figure 11.2 and capture a screenshot of your results of running that code.

Answer 1

#include <stdio.h>

#include <sys/wait.h>

#include <unistd.h>

int main() {

  pid_t processId = fork();

  // parent process fork() > 0

  if (processId > 0) {

    wait(NULL);

printf("\nParent Process is being Terminated");

  }

  

// child process fork() == 0

  else if (processId == 0) {

    sleep(3);

    wait(NULL);

    printf("\nChild Process is being Terminated");

  }

  return 0;

}

clang version 7.0.0-3~ubuntu0.18.04.1 (tags/RELEASE_700/final)

Child Process is being Terminated
Parent Process is being Terminated