Homework: need to check the time performance of the loop, computer heats
Question: I typed this code in python and my computer really heats and doesn't print
anything! however when I assigned `num = 2**10` it did. How can I calculate
approx. how long will it take for an average computer to run this code? the
code is:

    
    
    num = 2**100
    cnt = 0
    import time
    t0 = time.clock()
    for i in range(num):
        cnt = cnt+1
    print(cnt)
    t1 = time.clock()
    print("running time: ", t1-t0, " sec")   
    


Answer: That's because your computer doesn't ever finish the computation with 2**30.

