Answered: The output of the following program has…

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

Problem 1PE

See similar textbooks

Related questions

Concept explainers

Question

100%

The output of the following program has to be as below:

Output:

1. Parent process ID : 0
2. Child process ID: ....
3. Grand Child process ID: ...
4. Grand Child process ID: ....

5. Grand Child process ID: ...

But when I run the code, the Grand Child processes are not displaying in sequential order as shown in the output. I am trying to write a C program such that the parent process will create one child process and 3 grandchild processes and print their IDs. The Grand Child processes must appear in order of 3,4 and 5.

I am attaching my code below. Please tell me what should I change in the code to get the desired output.

My Code:

#include <stdio.h>

#include <sys/types.h>

#include <unistd.h>

#include <sys/wait.h>

int main() {

printf("1. Parent process ID: %d\n", getpid());

pid_t child;

child = fork();

if (child<0) {

printf("error");

}

else if (child==0) {

printf("2. Child process ID: %d\n", getpid());

for (int i=3; i<=5; i++) {

pid_t grandchild = fork();

if (grandchild == 0) {

printf("%d. Grandchild process ID: %d\n", i, getpid());

break;

}

}

}

sleep(1);

return 0;

}

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions