Engineering, 26.10.2019 03:43 kataldaine

Write a c program using the fork() system call that generates this sequence in the child process. the starting number will be provided from the command line. for example, if 8 is passed as a parameter on the command line, the child process will output 8, 4, 2, 1. have the parent invoke the wait() call to wait for the child process to complete before exiting the program. perform necessary error checking to ensure that a positive integer is passed on the command line. following are some running examples, assuming the compiled program named b. out:

Answers: 1

Show answers

Answers

Answer from: samueltaye

Program using the fork()

Explanation:

// code to create three child

// process of a parent

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

// Driver code

int main()

{

int pid, pid1, pid2;

// variable pid will store the

// value returned from fork() system call

pid = fork();

// If fork() returns zero then it

// means it is child process.

if (pid == 0) {

// First child needs to be printed

// later hence this process is made

// to sleep for 3 seconds.

sleep(3);

// This is first child process

// getpid() gives the process

// id and getppid() gives the

// parent id of that process.

printf("child[1] --> pid = %d and ppid = %d\n",

getpid(), getppid());

}

else {

pid1 = fork();

if (pid1 == 0) {

sleep(2);

printf("child[2] --> pid = %d and ppid = %d\n",

getpid(), getppid());

}

else {

pid2 = fork();

if (pid2 == 0) {

// This is third child which is

// needed to be printed first.

printf("child[3] --> pid = %d and ppid = %d\n",

getpid(), getppid());

}

// If value returned from fork()

// in not zero and >0 that means

// this is parent process.

else {

// This is asked to be printed at last

// hence made to sleep for 3 seconds.

sleep(3);

printf("parent --> pid = %d\n", getpid());

}

return 0;

}

Answer from: Quest

Idon’t know what the answer is i wish i could

Answer from: Quest

angvrswer:

vfg

grfhrtrhr:

jjj

yjujuju

jujuhuyhyt

bgf

bgr

gbr

bgr

gtr

bgr

gbgbbg

bgg

bbg

bfg

dcwf

fdb

ggb

rfe

gtg

gegte

gff

dfg

gfdsax

cvfbgnh

jmhngf

dsaazxscvb

nmhgb

fvdcsxaz

zxcv

bghn

Other questions on the subject: Engineering

Engineering, 03.07.2019 14:10, BardiFan

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Answers: 3

continue

Engineering, 04.07.2019 18:10, lowkeyqueenk

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk

Answers: 1

continue

Engineering, 04.07.2019 18:10, Candi9697

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.

Answers: 2

continue

Engineering, 04.07.2019 18:20, yasyyas646646

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.

Answers: 3

continue

You know the right answer?

Write a c program using the fork() system call that generates this sequence in the child process. th...