Part II: $[50\%]$

A$)[25\%]$ Write a C program which creates $10$ threads $($besides the main thread$).$ Each thread

increments a shared counter by one $100,000$ times. Compile and run your program several times

$($at least $5$ runs are recommended$).$ Provide screenshots of the output from multiple runs. Discuss

briefly in your report why the final counter value is not consistently $1,000,000$ as expected.

B$)[25\%]$: Modify your program from Part II$-$A to incorporate a mutex lock for synchronizing

access to the shared counter. Ensure that each increment operation on the counter is protected by

the mutex. Capture screenshots showing that the issue identified in Part II$-$A is no longer

present. In your report, explain how the mutex lock solved the problem.