Find the best fraction for pi with less than 8 digits in the
denominator.

Find the smallest 'difference' that the code below would produce.

Using C++ and threads.  Tell me how long it takes to run with 
1 thread, 2 threads, and 8 threads.

You can time an executable many ways.

import math
for denominator in range(1, 100):
        numerator = math.pi * denominator
        numerator = (numerator+0.5)//1
	difference = math.abs(numerator / denominator - math.pi)
        print(numerator, "/", denominator, diff)


For 80%, do the above.

For another 20%, 
	Find out the number of CPUs on the system
	Do that many of threads (use an array)
	Have each thread get the-next-number-to-do, and not do things by range.