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Recent questions tagged fork-system-call

2 votes

2 answers

1

GATE CSE 2023 | Question: 13
Which one or more of the following options guarantee that a computer system will transition from user mode to kernel mode? Function Call malloc Call Page Fault System Call

admin asked in Operating System Feb 15

by admin

1.5k views

0 votes

1 answer

2

Fork() | OS
int doWork(){ fork(); fork(); printf("Hello world!\n"); } int main() { doWork(); printf("Hello world!\n"); exit(0); }

abhinowKatore asked in Operating System Jan 13

by abhinowKatore

383 views

1 vote

3 answers

3

Unacademy AIMT question on Fork()
Given the following piece of code : Main() { Int child = fork(); Int c = 5; if (child == 5) { C + = 5; } Else { Child = fork(); C + = 5; } } What are the different values of the variable c? First of all checking child == ... a pseudocode as some of the syntaxes are wrong. Also I am getting the answer as 10,10,10. Given answer is 20,10,15. Can someone please check?

Sunnidhya Roy asked in Operating System Dec 14, 2022

by Sunnidhya Roy

407 views

1 vote

0 answers

4

Fork System Call and Threads | OS | MSQ
MSQ Consider the following statements, which one of the following is/are TRUE In fork() system call, child process inherits all the open file descriptors of parent process In fork() system call, child process copies the code of the ... system call, child process shares the code of the parent process User level threads shares the code segment of the process

Souvik33 asked in Operating System Nov 28, 2022

302 views

2 votes

1 answer

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h4kr asked in Operating System Nov 9, 2022

by h4kr

131 views

0 votes

1 answer

6

made easy test series
When a process create a child, which of the following is/are correct possibility/situation? A) Parent process can execute parallely with children. B) Parent process can wait until some or all of its children have terminated. C)Child process can only be the duplicate of parent process. D) Child process can only loaded with program other than parent program.

viral8702 asked in Operating System Oct 12, 2022

380 views

0 votes

2 answers

7

Operating System
On Solving manually I too getting 14 as answer. but on running more than 14 * are printed.

Overflow04 asked in Operating System Aug 29, 2022

409 views

0 votes

1 answer

8

justify the answer
how many child process will be created for the following code.how many hello and welcome will be printed #include <stdio.h> void main() { fork(); fork(); printf("Hello \n"); fork(); printf("welcome\n"); }

emlin asked in Operating System Jun 27, 2022

by emlin

911 views

1 vote

2 answers

9

Geeksforgeeks mock - 2022
Consider the following C program: #include <stdio.h> #include <stdlib.h> #include <unistd.h> int main (void) { pid_t pid; int x = 2; pid = fork ( ); if (pid = = 0); x = 8; fork( ); printf("%d", x); return 0; } Fork ( ) is a system call creates new ... the program is executed on the unix OS?[MSQ] (a) 8 2 2 8 (b) 8 8 2 2 (c) 2 8 8 2 (d) 2 2 8 8

o asked in Operating System Dec 19, 2021

by o

960 views

4 votes

8 answers

10

Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 39 (Page No. 177)
Consider the following piece of C code: void main( ) { fork( ); fork( ); exit( ); } How many child processes are created upon execution of this program?

Lakshman Patel RJIT asked in Operating System Oct 25, 2019

by Lakshman Patel RJIT

2.4k views

12 votes

4 answers

11

fork() using Tree structure
How many times ‘4’ will be printed ? int main() { if (fork() && (!fork())) { if (fork() || fork()) { fork(); } } printf("4 "); return 0; } How to approach these kind of questions using Tree structure ??

Brij gopal Dixit asked in Operating System Jun 13, 2019

by Brij gopal Dixit

5.4k views

1 vote

2 answers

12

Virtual Gate Test Series: Operating System - Fork-Join Concurrency Structure
Consider the code fragment: count = 3; S1; Fork L1; L1: S3; S2; goto L3; S4; Fork L2; L2: S6; goto L3; S5; L3: join count S7 Which one of the following represents correct precedence graph of the above code fragment? the answer is given but I’m getting where am I wrong?

aditi19 asked in Operating System Jun 12, 2019

3.2k views

0 votes

1 answer

13

Galvin Edition 9 Exercise 3 Question 1 (Page No. 149)
#include <sys/types.h> #include <stdio.h> #include <unistd.h> int value = 5; int main() { pid t pid; pid = fork(); if (pid == 0) { /* child process */ value += 15; return 0; } else if (pid > 0) { /* ... ;PARENT: value = %d",value); /* LINE A */ return 0; } } Explain what the output will be at LINE A in this program.

akash.dinkar12 asked in Operating System Mar 19, 2019

by akash.dinkar12

706 views

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Recent questions tagged fork-system-call