#
# file: four_f.py
#
# The program takes three values from the user (decimal values) and
# returns their product, their sum, their absolute values, and their average.
# Uses functions.
#

def main():
    print "This program asks for three decimal numbers, and then finds:"
    print " their product,\n their sum,\n their absolute values,\n and their average"

    try:
        a,b,c=input("Please, input three numbers using comas (a,b,c):")

        product(a,b,c)

        sum_(a,b,c)

        absolute_v(a,b,c)

        average(a,b,c)

    except NameError:
            print "Your inputs are not all numbers. "
    except TypeError:
            print "You didn't input three numbers."
    except SyntaxError:
            print "You dind't input the numbers correctly. Example of a proper input: 2,3,1"
    except:
            print "Something went wrong."


def product(x1,x2,x3):
    print
    print "The product of three numbers %0.2f x %0.2f x %0.2f = %0.2f" %(x1,x2,x3,x1*x2*x3)

def sum_(s1,s2,s3):
    print
    print "The sum of three numbers %0.2f + %0.2f + %0.2f = %0.2f" % (s1,s2,s3,s1+s2+s3)

def absolute_v(a,b,c):
    print
    print "|%f|=%f" %(a,abs(a))
    print "|%f|=%f" %(b,abs(b))
    print "|%f|=%f" %(c,abs(c))

def average(a,b,c):
    print
    print "(%0.2f + %0.2f + %0.2f)/3=%0.2f" % (a,b,c,(a+b+c)/3.0)

main()