AAE-CNAS-Labs/Topic-3-Forking/task_2_3.c

//
// Written for Computer Networks and Systems lab classes
// AUTHOR : Sergiusz Warga

#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>

void child_task() {
    printf("I am a child\n");
}

void print_pids() {
    printf("My PID is %d\nMy parent's PID is %d\n", getpid(), getppid());
}

void print_pids_child() {
    printf("CHILD\nMy PID is %d\nMy parent's PID is %d\n", getpid(), getppid());
}

int main() {
    pid_t pid;

    for (int i = 0; i < 5; ++i) {
        pid = fork();
        if (pid == -1) {    // If something went wrong.
            perror("Fork: ");
            exit(EXIT_FAILURE);
        }
        if (pid == 0){
            print_pids_child();
            exit(EXIT_SUCCESS);
        }
    }


    printf("I am a parent.\n");
    print_pids();
    sleep(1); // This may be required as the parent process won't wait for the child process to finish its execution.
    return 0;
}