Author: admin

#include <stdio.h>
#include <string.h>
#define N 100
float s=0;
float sigma(int);
int main()
{
s=s+1/sigma(N);
printf(“%f”,s);
}
float sigma(int n){
if(n==1)
return 1;
else
s=s+1/sigma(n-1);
return n;
}