Question

Run Using Kali Linux....Create a source code file named "Lab1.c". The code is as follows. A child is created and prints a message five times. The original process (parent) prints a message only three times. How would this code look on the compiler if you could please post the code and the compiler results. Need Reference Thank You

#include <sys/types.h>

#include <unistd.h>

#include <stdio.h>

#include <stdlib.h>

int main()

{

pid_t pid;

char *message;

int n;

printf("fork program starting\n");

pid = fork();

switch(pid)

{

case -1:

perror("fork failed");

exit(1);

case 0:

message = "This is the child";

n = 5;

break;

default:

message = "This is the parent";

n = 3;

break;

}

for(; n > 0; n--) {

puts(message);

sleep(1);

}

exit(1);

}

Answer 1

Form creates 2^n processes suppose 1 fork() is used that means 1 child process and 1 parent process will be created and 0 means child process and 1 means parent process so n=5 that is coded inside case 0: so when child process is created it will enter into the case 0: and n=5 is assigned there so child process will have their loop 5 times and parent is 1 so it will go to non zero parent process where n=3 is there so loop will execute 3 time , both process have their own copy of for loop to execute.

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