#CS 0008: Spring 2015 Lab 5

#YOUR NAME:                        


#YOUR PARTNER'S NAME:

#
# Working with a list of lists and string indices.  Look for "TODO" to see what
# to do.  You can enter your answers into this file.
#

def grade(myAns,correctAnswer):
   if myAns == correctAnswer:
       print("Correct, the answer is",myAns)
   else:
       print("My answer is",myAns,"but the correct answer is",correctAnswer)

def where(s,c):
    '''Given string s and single-character string c, return the
    position of the first occurrence of c in s.  If c is not in s,
    return -1.'''

    # Do not use any string methods, but you can use functions in __builtins__
    #
    # Remember that the positions of strings and list are numbered, starting
    #   at 0.  s = 'next'; s[0] is 'n'; s[1] is 'e'; and so on.
    #
   
def main():

   #START HERE:
   #The following is a list of lists, where the inner lists consist of an ID and a grade average 
    
   student_grades = [['999888777', 78.0], ['111222333', 90.0], ['444555666', 83.0]]    

   # Here is an example of a nested loop.  TODO: Run and trace this until you are sure you understand it
   for student in student_grades:
       print(student)
       for x in student:
          print(x)

   # Now we'll start using a list of measurements
   measurements = [[33, 34, 30], [29, 31, 34], [28, 27, 30]]
   print ("measurements is",measurements)

   # TODO Write code here to print the average of each inner list
   # For example, for 'measurements', the averages are 32.333333, 31.333333, and 28.333333

   # TODO Now do the same thing, but using the builtin function "sum".
   # enter 'help(sum)' in the Shell to see how to use it.

   # TODO read the header and docstring for function 'where' (above).
   # Here, create a set of at least 5 test cases for 'where' and call 'grade'
   # as in lab5 (grade is above).  Then, write function 'where' and test it.

main()