# Program to average numbers
# (user enters number of numbers, then numbers)
# Matt Bishop, Apr. 24, 2009
# for ECS 10 Spring 2009

# add the numbers and return the sum
# parameter: listnum, a list of numbers
# returns: their sum
def addup(listnum):
    # initialize sum
    sum = 0;
    # add each number in list to sum
    for i in listnum:
        sum = sum + i;
    # return sum
    return sum;

# compute average of a list of numbers
# parameters: numbers, a list of numbers
#             count, number of numbers to average
# returns: their (floating point) average
def average(numbers, count):
    # get the sum of the numbers
    sum = addup(numbers);
    # return the average
    return float(sum) / count;
    
# read a list of numbers and print the average
# calls: function addup
def main():
    # prompt for count of numbers to be entered
    n = input("How many numbers do you want to add? ");
    # initialize list variable
    numbers = [];
    # ask user for next number and
    # append each number to the list
    for i in range(n):
        prompt = "Enter number %d: " % (i + 1);
        numbers = numbers + [ input(prompt) ];
    # now compute and print average
    print "The average of your numbers is", average(numbers, n);

main();