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//**************************************
//
//INCLUDE files for :Precise Calculation
// of Pi
//**************************************
//
iostream.h
math.h
code:
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/
//
#include
#include
#define NUM_OF_ELEMENTS 20000
int main()
{
double pi = 0;
// Calculating pi/4
for (long int n = 1; n <= NUM_OF_ELEMENTS; n++)
{
pi += (double) pow(-1, n+1)/(2*n-1);
}
// Calculating pi
pi *= 4;
cout << "Estimated PI value (" << NUM_OF_ELEMENTS << " elements of Leibnitz series): "<< pi;
return 0;
}