/* zeno.c -- series sum */
#include <stdio.h>

int main(void)
{
    int t_ct;       // term count
    double time, x;
    int limit;
 
    printf("Enter the number of terms you want: ");
    scanf("%d", &limit);
    for (time=0, x=1, t_ct=1; t_ct <= limit; t_ct++, x *= 2.0)
    {
        time += 1.0/x;
        printf("time = %f when terms = %d.\n", time, t_ct);
    }
 
    return 0;
}