Calculate the value of π 幫忙看哪里錯 (15分)

Calculate the value of π from the infinite series

π=4-4/3+4/5-4/7+4/9-4/11.........

Print a table that shows the approximate value of π after each of the first 1000 terms of this series.





#include <iostream>

using namespace std;

int main()
{
long pi=4;
int n=999 ; //each of the first 1000 terms of this series
double s; //分母

for(int i=0;i<=n;i=i+2)
{
s=i+s;
pi = pi + 4/-s;
}

cout<<"pi的值為:"<<pi<<endl;

return 0;}

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