# Program to find minimum of 3 numbers
# (user enters numbers)
# Matt Bishop, May  1, 2009
# for ECS 10 Spring 2009

# this routine finds the minimum of 3 numbers using a cascade method 
# parameters: a, b, c: the three numbers
# returns: smallest of a, b, c
def least(a, b, c):
    minim = a;
    if b < minim:
        minim = b;
    if c < minim:
        minim = c;
    return minim;

# get 3 numbers and print minimum; also handle bogus input
# calls: least
def main():
    try:
        # get input and print result
        a,b,c = input("enter three comma-separated numbers: ");
        print "The minimum of", a, "and", b, "and", c, "is", least(a, b, c);
    # now handle errors
    except NameError:
        print "Bad form for input -- did you enter three numbers?"
    except SyntaxError:
        print "Bad form for input -- did you forget commas?"


main();