Beginner's Help

[SakamotoKazuma]

I am new to programming in python after programming in Java, C and C# for a number of years. Somehow I'm missing something or am doing something wrong, but this Pythagorean theorem program is giving me wrong answers.

print "Pythagorean Solver"
print "Enter -1 for unknown values."
 
A = input("A? ")
B = input("B? ")
C = input("C? ")
 
if A == -1:
    if B == -1:
        print "Too many unknowns."
        sys.exit()
    if C == -1:
        print "Too many unknowns."
        sys.exit()
    else:
        D = (C**2-B**2)**(1/2)
        print "A = ",D
 
if B == -1:
    if A == -1:
        print "Too many unknowns."
        sys.exit()
    if C == -1:
        print "Too many unknowns."
        sys.exit()
    else:
        D = (C**2-A**2)**(1/2)
        print "B = ", D
 
if C == -1:
    if A == -1:
        print "Too many unknowns."
        sys.exit()
    if B == -1:
        print "Too many unknowns."
        sys.exit()
    else:
        D = (A**2 + B**2)**(1/2)
        print "C = ", D
 
else:
    print "Nothing to solve."
 

[bvdet]

I am new to programming in python after programming in Java, C and C# for a number of years. Somehow I'm missing something or am doing something wrong, but this Pythagorean theorem program is giving me wrong answers.

print "Pythagorean Solver"
print "Enter -1 for unknown values."
 
A = input("A? ")
B = input("B? ")
C = input("C? ")
 
if A == -1:
    if B == -1:
        print "Too many unknowns."
        sys.exit()
    if C == -1:
        print "Too many unknowns."
        sys.exit()
    else:
        D = (C**2-B**2)**(1/2)
        print "A = ",D
 
if B == -1:
    if A == -1:
        print "Too many unknowns."
        sys.exit()
    if C == -1:
        print "Too many unknowns."
        sys.exit()
    else:
        D = (C**2-A**2)**(1/2)
        print "B = ", D
 
if C == -1:
    if A == -1:
        print "Too many unknowns."
        sys.exit()
    if B == -1:
        print "Too many unknowns."
        sys.exit()
    else:
        D = (A**2 + B**2)**(1/2)
        print "C = ", D
 
else:
    print "Nothing to solve."
 

Instead of '1/2' for the power, use '0.5' or '1/2.0'. You were performing integer division. Look at this example:

>>> 100**(1/2)
1
>>> 1/2
 
>>> 100**0
1
>>> 100**0.5
10.0
>>>