Question

#Find the cube root of a perfect cube
x = int(raw_input('Enter an integer: '))
ans = 0
while ans*ans*ans < abs(x):
ans = ans + 1
#print 'current guess =', ans
if ans*ans*ans != abs(x):
print x, 'is not a perfect cube'
else:
if x < 0:
ans = -ans
print 'Cube root of ' + str(x) + ' is ' + str(ans)
Okay look at the while loop. You see the
14 years ago

Answer 1

Let's look at an example to help you understand:
let's say we enter 27 for the integer

while loop:
0*0*0 < 27? yes
ans = 1

1*1*1 < 27? yes
ans = 2

2*2*2 < 27? yes
and = 3

3*3*3 < 27? no

while loop finished

3*3*3 != 27? no, cube root found
__________________________
if we had used '==' in that while loop it would have done this:

0*0*0 == 27? no

while loop finished

0*0*0 != 27? yes
27 is not a perfect cube

Answer 2

You're great. Thanks so very much!

Answer 3

You're welcome. If this resolved the question would you please close it?