GATE - 2005 | OS | Consider the following code fragment if (fork() == 0)
Posted on 19-02-2022
GATE - 2005 [Operating System]
Question:
Consider the following code fragment:
if (fork() == 0)
{ a = a + 5; printf(“%d,%dn”, a, &a); }
else { a = a –5; printf(“%d, %dn”, a, &a); }
Let u, v be the values printed by the parent process, and x, y be the values printed by the child process. Which one of the following is TRUE?
|
A |
u = x + 10 and v = y |
|
B |
u = x + 10 and v is ≠ y |
|
C |
u + 10 = x and v = y |
|
D |
u + 10 = x and v ≠ y |
Solution:
Option (C) is Correct.
u, v values printed by parent process.
u=a-5; v be address of a
a=u+5;
x, y values printed by child process.
x=a+5; y be the address of a
x=u+5+5; v=y
x=u+10