1 #include<stdio.h>
 2 int main()
 3 {
 4     float x,n=100000,integral=0,i;
 5     for(i=0;i<100000;)
 6     {
 7         i++;
 8         x=n*n;
 9         integral+=i/x;    
10     }
11     printf("%0.5f\n",integral);
12     return 0;
13 }