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help needed to compute maclaurin series using c

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Join Date: Jul 2008

Posts: 20

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stewie griffin stewie griffin is offline

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Re: help needed to compute maclaurin series using c

#11

Jul 25th, 2008

Hi, this is the algorithm to calculate pi,
Pi = 4-4/3+4/5-4/7+4/9...= 4*((-1)^n+1)/2n-1
It's very similar to your need

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
#include<stdio.h>
#include<math.h>
 
int main()
{
	float delta; //precision 
	float pi=0,temp;
	int n=1;
	scanf("%f",&delta);
	do
	{
		temp = (pow(-1.0,n+1)/(2*n-1)*4);
		pi+=temp;
		n+=1;
		if (temp<0) 
			temp*=-1;
	}while (temp>delta);
printf("%f",pi);
return 0;
}
#include<stdio.h>
#include<math.h>

int main()
{
	float delta; //precision 
	float pi=0,temp;
	int n=1;
	scanf("%f",&delta);
	do
	{
		temp = (pow(-1.0,n+1)/(2*n-1)*4);
		pi+=temp;
		n+=1;
		if (temp<0) 
			temp*=-1;
	}while (temp>delta);
printf("%f",pi);
return 0;
}