#
# File: ps1pr4.py - Problem Set 1, Problem 4
# Author name:
# Email:
# 
# Description: Functions with numeric inputs
#
# This is an individual-only problem that you must complete on your own.
#


#

# function 0
def opposite(x):
    """ returns the opposite of its input
        input x: any number (int or float)
    """
    return -1*x

# put your definitions for the remaining functions below






# TO DO: add test calls for your functions
# sample test call for function 0
print('opposite(-8) returns', opposite(-8))