AAE-CNAS-Labs/Topic-3-Forking/task_2_2.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());
}

int main() {
    pid_t pid;

    pid = fork();

    if (pid == -1) {    // If something went wrong.
        perror("Fork: ");
        exit(EXIT_FAILURE);
    }

    if (pid == 0) {     // If this is a child process.
        child_task();
        print_pids();
        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;
}