Answer:
This is the complete correct program:
#include <stdio.h>
#include<sys/types.h>
#include<unistd.h>
int value = 128;
int main()
{
pid_t pid;
pid=fork();
if (pid==0) /* child process */
{
value +=8;
return 0; }
else if (pid > 0) {/* parent process */
wait (NULL);
printf ("PARENT: value =%d\n" ,value); /* LINEA */
return 0;
}
}
The output of the LINE A is:
PARENT: value = 128
Explanation:
The fork() function used in the program creates a new process and this process is the child process. The child process is same as the original process having its own address space or memory.
In the child process the value of pid is 0. So the if condition checks if pid==0. Then the child process adds 8 to the value of its variable according to the following statement
value +=8;
Now the original process has value = 128. In else if part the parents process has the value of pid greater than zero and this portion of the program is of the parent process :
else if (pid > 0)
{ wait (NULL);
printf ("PARENT: value =%d\n" ,value);
return 0; }
So the value 128 is printed at the end in the output.
wait(NULL) is used to wait for the child process to terminate so the parent process waits untill child process completes.
So the conclusion is that even if the value of the variable pid is changed in the child process but it will not affect the value in the variable of the parent process.
Answer is a
passphrase
Passphrase consists of characters longer than passwords used
in creating digital signatures. As compared to passwords, passphrases are
easier to remember and considered more secure due to the overall length. Both Passphrase
and passwords serve the same purpose of securing sensitive information.
Answer:
Restate financial statement for the first and second year.
Prepare financial statement of year 3 reflecting the effects of error from year one and two
Explanation:
A revision of the the entire financial statement from year one will be helpfull, when this is re-stated for the first and second year. Then in stating the amount of assets and liabilities carried into year three, the cummulative effect of the error from the previous two years should be reflected.
Answer: $420
Explanation: from the question above, mercy worked 42 hours at $10 an hour. Her total pay before tax is: 42 x 10 =
$420
