[Solved] COMP2560 Lab #5 Process Control

Write a C program where child processes are forked in this way:

• the original process creates two child processes
• each process created from the original process creates two child processes

Each process is given a unique process number in range 1..7 in this way:

• the original process is numbered 1
• the two processes created by process 1 are numbered 2 and 3
• the two processes created by process 2 are numbered 4 and 5
• the two processes created by process 3 are numbered 6 and 7

Your program receives 7 arguments from command line. These arguments are expected to be natural numbers. Each process will go to sleep for some time after having created child processes if needed. The number of seconds a process numbered i is put to sleep is the ith argument.

The sleep time can be considered as to simulate the different computation time each process takes to carry out its subtask.

Before each process terminates, print out its process number and process id.

Sample output:

>>>>> a.out 1 2 3 4 5 6 7 process 1 terminated. pid=4860 process 2 terminated. pid=4861 process 3 terminated. pid=4862 process 4 terminated. pid=4863 process 5 terminated. pid=4864 process 6 terminated. pid=4865 process 7 terminated. pid=4866 >>>>> a.out 7 6 5 4 3 2 1 process 7 terminated. pid=4876 process 6 terminated. pid=4875 process 5 terminated. pid=4874 process 4 terminated. pid=4873 process 3 terminated. pid=4872 process 2 terminated. pid=4871 process 1 terminated. pid=4870 >>>>> a.out 2 8 3 10 9 1 5 process 6 terminated. pid=4940

process 1 terminated. pid=4935 process 3 terminated. pid=4937 process 7 terminated. pid=4941 process 2 terminated. pid=4936 process 5 terminated. pid=4939 process 4 terminated. pid=4938

Part II (optional)

If your previous solution is not written this way, try it: Use two nested for-loop statements to complete the assignment. Processes 2 and 3 are created in the outer forloop, and processes 4, 5, 6, 7 are created in the inner for-loop.