HW 3

#include <iostream>
using namespace std;
int main()
{
    const int n=5;
    int a[n]={1,5,2,7,2},i;
    double sum,s;
    sum=0;
    s=0;
    for (i=0;i<n;i++)
    sum=1/((double)a[i])+sum;
    s=n/sum;
    cout<<"s="<<s<<endl;
    system("pause");
    return 0;
}