Question #35: How many total processes will be spawned after executing following program?
int main()
{
fork() || fork() && fork() ;
}
Options:
A) 4
B) 8
C) 6
D) 7
Solution:
As we have OR after the first fork(), hence both child and parent process will be executed further. After second fork(), we have 4 processes. In one of the case, where in we have child process in each of the fork calls, we have 0 || 0 = 0 till now, hence the next fork() won’t be executed and will return from here. For all other cases, another child will be forked, hence 4+3 = 7 processes. Hence, the correct answer is option D.
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