Using a FOR LOOP to multiply weights!!

[javajive]

Any ideas in how to do this question?? its causing me alot of trouble!

Q.Write a class that uses a for loop to multiply your weight by itself eight times, storing the amount in another variable.
i.e. on the first iteration your weight to the power of one will be stored. On the next iteration, this amount will again be multiplied by your weight and stored, and so on. Include any relevant classes to run and test the application.

Thanks in advance

[Ganon11]

The problem specification is fairly straightforward. What are you having trouble with?

[javajive]

with the FOR LOOP statement.
I've been using it already for simple programs like a counter but don't know what to do with it when having to do math.
i know the statement should be like:
for(int i = 0;i < 4; i = i+1)

but dont know how to fit math into!!

[dav3]

with the FOR LOOP statement.
I've been using it already for simple programs like a counter but don't know what to do with it when having to do math.
i know the statement should be like:
for(int i = 0;i < 4; i = i+1)

but dont know how to fit math into!!

I think you want i < 8 not i < 4....

and the math will go in the for loop, not when you declare it

for(int i = 0; i < 8; i++)
{
do your math here. 
}
 

Im not certain but look at math.POW, I think that might have what you need

[javatech007]

how would i store the weight to a value so it can be used again??

for example: weight = 5

First it would be
5 to the power of 1 = 5
5*5=25
25*5=125
125*5=625
so on for eight times

with the loop:
for(int i = 0; i < 8; i++)

how would i work the weight into it??

[Ganon11]

OK, what are you doing to the value every time inside the loop? You start with an initial variable, weight. You are told to multiply it by itself 8 times. Actually, I read this two ways:

1) You are squaring the term weight 8 times. So it is ((((((((weight^2)^2)^2)^2)^2)^2)^2)^2) = weight^(2^8) = weight^256.
2) You are taking the value weight^8 by multiplying an additional variable, sum, by weight 8 times. So it is ((((((((1 * weight) * weight) * weight) * weight) * weight) * weight) * weight) * weight) = weight ^ 8.

Which of these do you think it is? regardless, how can you make a mathematical statement to do this correctly, knowing that your loop is properly executing 8 times? (Hint - each one involves some simply multiplication).