Question 2: Given the following output, make the necessary changes on the code below so it can replicate similar output. Output: value = 10 in process *num1* ppid= *num2* value = 11 in process *num1* ppid=*num2* value = 6 in process *num2* ppid=*num3* ** note that num1, num2 and num3 could be any number that your operating system will assign to the process //Code #include #include #include #include #include int value = 5; int status; int main(void) { pid_t pid fork(); if (pid == 0) { value += 5; printf("value = %d in process %d ppid=%d\n", value, getpid (),getppid()); exit(0); } } else { wait (&status); pid fork(); if (pid == 0) value + 10; } value++; printf("value = %d in process %d ppid=%d\n", value, getpid (),getppid()); return 1;

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Question 2: Given the following output, make the necessary
changes on the code below so it can replicate similar output.
Output:
value = 10 in process *num1* ppid= *num2*
value = 11 in process *num1* ppid = *num2*
value = 6 in process *num2* ppid=*num3*
** note that num1, num2 and num3 could be any number that your operating system will
assign to the process
//Code
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <unistd.h>
#include <sys/types.h>
int value = 5;
int status;
int main(void)
{
pid_t pid fork();
if (pid = 0)
{
value += 5;
printf("value = %d in process %d ppid=%d\n", value,
getpid (),getppid());
exit(0);
}
}
else
{
wait (&status);
fork();
pid
if (pid == 0)
value += 10;
}
value++;
printf("value = %d in process %d ppid = %d\n", value,
getpid (),getppid());
return 1;
Transcribed Image Text:Question 2: Given the following output, make the necessary changes on the code below so it can replicate similar output. Output: value = 10 in process *num1* ppid= *num2* value = 11 in process *num1* ppid = *num2* value = 6 in process *num2* ppid=*num3* ** note that num1, num2 and num3 could be any number that your operating system will assign to the process //Code #include <stdio.h> #include <stdlib.h> #include <sys/wait.h> #include <unistd.h> #include <sys/types.h> int value = 5; int status; int main(void) { pid_t pid fork(); if (pid = 0) { value += 5; printf("value = %d in process %d ppid=%d\n", value, getpid (),getppid()); exit(0); } } else { wait (&status); fork(); pid if (pid == 0) value += 10; } value++; printf("value = %d in process %d ppid = %d\n", value, getpid (),getppid()); return 1;
Question 1: What is the output and the process tree for this
code?
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/wait.h>
int value = 5;
int main(void)
{
pid_t pid fork();
if (pid == 0)
{
value += 5;
printf("value = %d in FIRST CHILD process %d ppid=%d \n", value,
getpid (), getppid());
exit(0);
}
else
{
wait (NULL);
printf("\n value = %d in parent FIRST process %d ppid=%d \n", value,
getpid (), getppid());
value += 10;
printf("\n value = %d in SECOND CHILD process %d ppid=%d \n",
value, getpid (), getppid());
exit(0);
}
pid = fork();
if (pid == 0)
{
}
}
value++;
printf("\n value = %d in parent SECOND process %d ppid=%d\n", value,
getpid (), getppid());
return 0;
Output:
Process tree:
Transcribed Image Text:Question 1: What is the output and the process tree for this code? #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <sys/wait.h> int value = 5; int main(void) { pid_t pid fork(); if (pid == 0) { value += 5; printf("value = %d in FIRST CHILD process %d ppid=%d \n", value, getpid (), getppid()); exit(0); } else { wait (NULL); printf("\n value = %d in parent FIRST process %d ppid=%d \n", value, getpid (), getppid()); value += 10; printf("\n value = %d in SECOND CHILD process %d ppid=%d \n", value, getpid (), getppid()); exit(0); } pid = fork(); if (pid == 0) { } } value++; printf("\n value = %d in parent SECOND process %d ppid=%d\n", value, getpid (), getppid()); return 0; Output: Process tree:
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