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radius_computation.py
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radius_computation.py
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## Stephen Hoerner
## CSCD 110
## Assignment 1
# load math module
import math
# FUNCTIONS
def circleCircumference(p_radius):
return math.pi * 2 * p_radius
def circleArea(p_radius):
return math.pi * p_radius**2
def sphereSurfaceArea(p_radius):
return 4 * math.pi * p_radius**2
def sphereVolume(p_radius):
return (4/3) * math.pi * p_radius**3
def numInput(prompt): # user input
return eval(input(prompt))
# MAIN
try:
radius = numInput('Enter radius: ')
if (abs(radius) != radius):
raise ValueError; # throw neg-value exception
except ValueError: # cannot be negative
print('Invalid number; negative values not permitted.')
except: # probably an eval() error
print('Invalid value.')
else: # ideal execution, no errors
print() # newline
print('Circumference of circle: ' + str(circleCircumference(radius)))
print('Area of circle: ' + str(circleArea(radius)))
print('Surface area of sphere: ' + str(sphereSurfaceArea(radius)))
print('Volume of sphere: ' + str(sphereVolume(radius)))
# Voila.