/*
 * fork-and-wait.c
 */

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

int
main(int argc, char *argv[])
{
    pid_t child_pid, exit_pid;
    int exit_value;

    child_pid = fork();

    if(child_pid == 0) {
        printf("I am the child, my pid is %d.\n", getpid());
        sleep(2);
        printf("I, the child just woke up.\n");
        exit(42);
    } else {
        printf("I am the parent and my child's pid is %d.\n", child_pid);
        printf("Parent is waiting for child to exit...\n");
        exit_pid = wait(&exit_value);
        printf("My child, pid %d, exited with value %d.\n", exit_pid,
                WEXITSTATUS(exit_value));
    }
}