Question

Consider the following program

main()

{

fork() ;

fork() ;

fork( ) ;

}

How many new processes will be created ?

1. 9
2. 6
3. 7
4. 5

Answer 1

Correct Answer - Option 3 : 7

Concept:

Fork system call is used to create a new process also called a child process or new process.

Formula:

With n fork system calls, number of new (child) processes created is 2n – 1.

Explanation:

Here there are 3 fork system calls in the given program.

new process created = 2n – 1= 23 – 1 = 7