COMP2560- Lab 5 Solved

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 

1          60-256 System Programming                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Dr.       Chen   

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.

           

           

             

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