/* 5(b) W.A.P. to find
the value PI using series : PI = sqrt(6/12+6/22+ . . . )
to a given accuracy. */
#include<stdio.h>
#include<math.h>
void main()
{
float pi=0.0,temp=0.0,acc,term=2.0,sum=6.0;
clrscr();
printf("Enter the accuracy value : ");
scanf("%f",&acc);
pi=sqrt(sum);
while ((fabs(temp-pi))>acc)
{
temp=pi;
sum+=6.0/(term*term);
pi=sqrt(sum);
term+=1.0;
}
printf("\n\nPi value is %f\nCounter = %.0f",pi,term-1);
getch();
}