#!/usr/bin/env python
'''
Simple script written in Python
Gets the area of
1) Triangle
2) Square/Rectangle
3) Circle
'''
import math, sys
class AreaFinder:
    def GetAreaTriangle(self, n1, n2):
        area = n1 * n2 #Area = b * h / 2
        area = area / 2
        print area
    def GetAreaSquare(self, n1, n2):
        area = n1 * n2 #Area = b * h
        print area
    def GetAreaCircle(self, n1):
        area = math.pi * n1 ** 2
        print area
        
def main():
    print(\"*\" * 30)
    print(\"Chroniccommands simple area calculator\")
    print(\"*\" * 30)
    print(\"1 - Triangle\n2 - Square/Rectangle\n3 - Circle\n4 - Exit\")
    choice = raw_input(\"Choice: \")
    if choice == '1':
        n1 = int(raw_input(\"Base: \"))
        n2 = int(raw_input(\"Height: \"))
        inittriangle = AreaFinder()
        inittriangle.GetAreaTriangle(n1, n2)
    elif choice == '2':
        n1 = int(raw_input(\"Width: \"))
        n2 = int(raw_input(\"Height: \"))
        initsquare = AreaFinder()
        initsquare.GetAreaSquare(n1, n2)
    elif choice == '3':
        n1 = int(raw_input(\"Radius: \"))
        initcircle = AreaFinder()
        initcircle.GetAreaCircle(n1)
    elif choice == '4':
        print(\"Goodbye\")
        sys.exit()
    else:
        print(\"Choice not recognized\")
        sys.exit()
        
main()