Dark Mode

Recent questions tagged fork-system-call

7 votes

1 answer

61

fork() system call.
for ( i = 1; i<=3; i++ ) { fork(); fork(); } How many child process will create ?

saurav raghaw asked in Operating System Aug 8, 2018

by saurav raghaw

3.1k views

0 votes

0 answers

62

General Topic Doubt Operating Systems: Fork
what is output?

arun_singh asked in Operating System Aug 4, 2018

619 views

1 vote

1 answer

63

GATE Suitability Test | Test 1 | Question: 2
The set of values printed (in any order) by the following code will be #include<stdio.h> #include<unistd.h> int main() { static int count; if(fork()) { count++; } if(fork() && !count++) count++; printf(“%d \t”, count); } 0 1 1 2 0 0 1 2 0 1 2 2 2 2 2 2

Arjun asked in Operating System Jun 10, 2018

by Arjun

314 views

1 vote

2 answers

64

Doubt about fork()
#include <stdio.h> int main(void) { int i=0; printf("HAI\n"); for(i=1;i<=3;i++) { if(fork()==0) printf("*"); } return 0; } How many times * will be printed? and How many times HAI will be printed?

Shaik Masthan asked in Operating System Jun 4, 2018

by Shaik Masthan

891 views

5 votes

1 answer

65

Fork Output
#include<stdio.h> #include<sys/types.h> #include<unistd.h> void forkexample() { int x = 1; if (fork() == 0) printf("Child has x = %d\n", ++x); else printf("Parent has x = %d\n", --x); } int main() { forkexample(); return 0; ... = 2 (or) Child has x = 2 Parent has x = 0 I guess both because we dont know who will return first parent or child is it ?

Na462 asked in Operating System May 25, 2018

by Na462

4.0k views

0 votes

1 answer

66

Fork Process
#include <stdio.h> #include <stdlib.h> #include <unistd.h> int main(void) { pid_t pid = fork(); pid = fork(); pid = fork(); if (pid == 0) { fork(); } fork(); return 0; } Total Number of Processes existing will be ... Processes (12 Parent and $12$ child). Please see my solution carefully and point out weather the number of parent and child were calculated correctly ?

Na462 asked in Operating System May 25, 2018

by Na462

899 views

2 votes

2 answers

67

C Programming
main() { if(fork()>0) sleep(100); } The given code results in the creation of: I) an orphan process II) a zombie process III) a process that executes forever IV) None of these Can someone explain this?

gauravkc asked in Programming in C Apr 30, 2018

9.8k views

3 votes

3 answers

68

ISRO2018-4
The following $C$ program: { fork(); fork(); printf("yes"); } If we execute this core segment, how many times the string yes will be printed? Only once 2 times 4 times 8 times

Arjun asked in Operating System Apr 22, 2018

by Arjun

10.8k views

1 vote

3 answers

69

PGEE 2018
void main(){ fork(); fork(); printf("Hello"); } How many time print function will execute

Tesla! asked in Operating System Apr 22, 2018

by Tesla!

833 views

2 votes

1 answer

70

Fork System Call
#include<stdio.h> #include<stdlib.h> void main() { int a =100; if(fork()==0) { a=a+5; printf("%d %d \n",a,&a ); } } How many parent and child process will be created?

srestha asked in Operating System Mar 8, 2018

2.5k views

0 votes

2 answers

71

mock test
Consider following pseudo code : main() { int t1,t2,t3; t1=t2=t3=0; t1=fork(); t2=fork(); if (t1!=0){ t3=fork(); printf("Hello"); } } How many Hello's are printed when above code get executed. $1$ $2$ $3$ $4$

bhanu kumar 1 asked in Operating System Feb 27, 2018

by bhanu kumar 1

1.2k views

0 votes

1 answer

72

fork() call in operating systems
Kindly explain Output of the given program....

khalida mujahid asked in Operating System Feb 8, 2018

by khalida mujahid

886 views

1 vote

2 answers

73

Ace Test series: Operating System - Fork
What is the number of child process created ? Answer given was 63, BUT i am getting 9 !

♥_Less asked in Operating System Jan 12, 2018

1.8k views

2 votes

4 answers

74

fork()
1)Consider the following pseudo code: for(i=1;i<=4;i++) { fork(); printf("X"); } How many times “X” is printed? 2) Consider the following pseudo code: void main() { fork(); fork(); fork(); fork(); printf("X"); } How many times “X” is printed?

ankitgupta.1729 asked in Operating System Dec 14, 2017

by ankitgupta.1729

1.4k views

0 votes

1 answer

75

MadeEasy Subject Test 2017: Operating System - Fork
how to make concurrency diagram plz explain?

nikkey123 asked in Operating System Nov 19, 2017

674 views

7 votes

4 answers

76

Self Doubt
{ if(fork()&& fork()) { fork(); } if(fork()||fork()) { } printf("GATE\n"); How many times GATE will be printed? and also the explanation

Mk Utkarsh asked in Operating System Nov 14, 2017

1.2k views

4 votes

3 answers

77

made easy practice book
What is the output of the following program? main(){ printf("Hi"); fork(); } a) HiHi b) Hi c) nothing will be printed d) none of the above

charul asked in Operating System Nov 10, 2017

by charul

785 views

11 votes

3 answers

78

self doubt OS fork()
find total no of processes i am getting 29 as answer as all will be child process except one parent process plz explain how answer is 24 here i am very confused in such question by drawing diagram #include<stdio.h> #include<stdlib.h> int main(void) { pid_t pid = fork(); pid = fork(); pid = fork(); if(pid == 0) { fork(); } fork(); return 0; }

Kaluti asked in Operating System Aug 20, 2017

by Kaluti

1.4k views

2 votes

1 answer

79

fork query
when fork is execute the child process has same virtual address space or physical address space ? when we print address of a variable in c ..what is it :->virtual address or physical address?

hem chandra joshi asked in Operating System Aug 20, 2017

by hem chandra joshi

563 views

11 votes

4 answers

80

fork system call
Consider the following code snippet: if(fork()&& fork()) { fork(); } if(fork()||fork()) { fork(); fork(); } printf("GATE 2017"); How many times GATE $2017$ printed? How to solve this using tree diagram?

set2018 asked in Operating System Jul 7, 2017

9.3k views

1 vote

1 answer

81

fork system call
How many process are created by the program? int main(){ int i; for(i=0;i<4;i++) fork(); return 0; } Can I write like this ? fork(); fork(); fork(); fork();

set2018 asked in Operating System Jul 7, 2017

7.8k views

2 votes

2 answers

82

working of fork() system call
How many times "hello" gets printed? main() { fork(); fork(); printf("hello"); }

set2018 asked in Operating System Jul 7, 2017

11.4k views

1 vote

0 answers

83

Recursive fork()
The pid_t data type is a signed integer type which is capable of representing a process ID. getpid() returns the process ID of the current process The wait() system call suspends execution of the calling process until one of its children terminates. wait(): on ... } PS : some of the system call and macro definitions are simplified for the sake of the QS as well as for simplicity.

dd asked in Operating System Jun 2, 2017

by dd

2.1k views

15 votes

5 answers

84

ISRO2017-51
Wha is the output of the following program? main() { int a = 10; if(fork()) == 0)) a++; printf("%d\n",a); } 10 and 11 10 11 11 and 11

sh!va asked in Operating System May 7, 2017

by sh!va

8.7k views

3 votes

4 answers

85

Gatebook_Mocktest2(Operating Systems)
Process executes the following code for (i=0;i<5,i++) for (j=0;j<5,j++) fork(); The no of child processes created is ?

smartmeet asked in Operating System Feb 7, 2017

1.0k views

0 votes

0 answers

86

Madeeasy Test Series
What is the answer to this problem? I am getting 10 as an answer.

Akhilesh Yadav 1 asked in Operating System Dec 23, 2016

by Akhilesh Yadav 1

551 views

0 votes

1 answer

87

fork behaviour
#include <stdio.h> #include <sys/types.h> #define MAX_COUNT 200 void ChildProcess(void); /* child process prototype */ void ParentProcess(void); /* parent process prototype */ void main(void) { pid_t pid; pid = fork(); if (pid == 0) { int x1= 112; float ... printf(" *** Child process ***\n"); } void ParentProcess(void) { printf("*** Parent*****\n"); }

vaishali jhalani asked in Operating System Nov 27, 2016

by vaishali jhalani

747 views

3 votes

1 answer

88

fork() system call
MY QUESTION IS 1)WHY PRINTF() PRINT VIRTUAL ADDRESS(MENTIONED IN EXPLANTION) NOT PHYSICAL ADDRESS 2) WHY VIRTUAL ADDRESS(O/P OF PRINTF(&VAR)) OF A VARIABLE CHANGES WHEN WE RUN A PROGRAM MANY TIMES Consider the following code fragment: if (fork() = ... process and virtual address of a' doesn't change in child process. Therefore, we get same addresses in both parent and child.

indrajeet asked in Operating System Nov 20, 2016

1.9k views

2 votes

0 answers

89

fork() system call
int main(void) { if(fork() && fork()) { fork(); } if(fork() || fork()) { fork(); fork(); } printf("\nGate 2017\n"); } How many times "Gate 2017" will be printed?

dd asked in Operating System Oct 24, 2016

by dd

1.3k views

2 votes

0 answers

90

fork() system call
for(i=1;i<=3;i++) { fork(); printf("x"); } How many times 'x' is printed ?

dd asked in Operating System Oct 24, 2016

by dd

1.1k views

Page:

Recent questions tagged fork-system-call