I need help with the following assignment in my Operating System Class:

fork() system call practice questions:

1. Assume that the following two variables have been declared and initialized:

int pid1 = 1;

int pid2 = 1;

Draw a process tree for each of the following program segment:

(you may want to trace the program execution like what we did in class)

a.

pid1 = fork();

pid2 = fork();

if (pid2 != 0)

fork();

b.

pid1 = fork();

pid2 = fork();

if (pid1 != 0 && pid2 == 0)

fork();

2. What is the total number of processes, including the original process, created by the following code?

(use the tabular format covered in class)

// Assume the following program segment

// creates m new processes

fork();

// Assume the following program segment

// creates n new processes

fork();