# quadratic4.py
# A program that computes the real roots of a quadratic equation.
# Illustrates use of a multi-way decision
import math
def main():
print "This program finds the real solutions to a quadratic\n"
a, b, c = input("Please enter the coefficients (a, b, c): ")
discrim = b * b - 4 * a * c
if discrim < 0:
print "\nThe equation has no real roots!"
elif discrim == 0:
root = -b / (2 * a)
print "\nThere is a double root at", root
else:
discRoot = math.sqrt(b * b - 4 * a * c)
root1 = (-b + discRoot) / (2 * a)
root2 = (-b - discRoot) / (2 * a)
print "\nThe solutions are:", root1, root2
main()