how do i write this in c++ language?

pi = 4 [ 1 - 1/3 + 1/5 - 1/7 + 1/9 ... + ((-1)**N)/(2N + 1) ]

i have pi = 4 * ( 1 - ((pow(-1, n))/((2 * n) + 1));
and its not working.

thanks

This might get a better response in the Academics thread... other than that, I wish I could help... I'm taking java and we're just getting into the math stuff... sorry man.

Carl

[mod edit: Yes, it would. Next time, Monster, just wait for one of us to take care of it; don't double-post.]

check your parenthases...you are missing a ) somewhere. You have 6 ('s and 5 )'s

Well, because that's not the same formula...

If I go and assume that it's a loop and you go through and add a term to it every time, then you'd have to make it pi +=, so that it will add the term every time instead of reassigning pi a different number not based on the last ones.

#define pi 3

I thought i remembered the pow funtion only using floats too. try putting ".0" after your numbers.

problem is fixed...thanks

this is what i had to do.

If I go and assume that it's a loop and you go through and add a term to it every time, then you'd have to make it pi +=, so that it will add the term every time instead of reassigning pi a different number not based on the last ones.

BAM!

or you could write you own programs instead of asking people how to write it... but maybe thats just me.

He didn't ask anyone to write it for him, he was stumped on why one part wasn't working, so he asked for help. Way to be a troll.