NIELIT 2018-50

Question

The process executes the following code and after execution ______ number of child process get created

fork();
fork();
fork();
fork();

• A. $4$
• B. $1$
• C. $15$
• D. $16$

Answer 1

Number of child processes created when number of fork() calls are n = $2^{n}$-1

Here, number of times fork() is invoked = 4

So total number of child processes = $2^{4}$-1 = 15