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

using namespace std;

void firstFork();
void secondFork();
void parentTask();
void execTask();
void countingTask();

void firstFork()
{
    pid_t pid = fork();

    if (pid == 0)
    {
        // child process
        cout << "Child 1 created by fork \n";
        execTask();
    }
    else if (pid < 0)
    {
        // fork failed
        cout << "First child fork failed \n";
        exit(EXIT_FAILURE);
    }
}
void secondFork()
{
    pid_t pid = fork();

    if (pid == 0)
    {
        // child process
        cout << "Child 2 created by fork \n";
        countingTask();
    }
    else if (pid < 0)
    {
        // fork failed
        cout << "Second child fork failed \n";
        exit(EXIT_FAILURE);
    }
}

int main()
{
    parentTask();
}

/*Forks itself 2 times say bye and finish immidiately */
void parentTask()
{
    // execl("/bin/ls","ls", (char *) 0);
    firstFork();
    // secondFork();
    cout << "Bye\n";
    exit(EXIT_SUCCESS);
}

/*exec its command and finishs */
void execTask()
{
    execl("/bin/ls", "ls", NULL);
    exit(EXIT_SUCCESS);
}

/*spawn 5 threads which would count to 30
(by printing their name and counter to console output)
and then finish. Numbers printed must be in order
and each thread can print at most 1
number more than other threads. */
void countingTask()
{
    exit(EXIT_SUCCESS);