#include<stdio.h>
#include<conio.h>
#include<math.h>
int main ( )
{
int n ,x=1,sum;
printf("Enter integer number:");
scanf("%d",&n);
do{
if(x%2==0)
{sum+=1.0/x;
printf("1.0/%d+",x);
}
else
{sum+=x;
printf("%d+",x);
}
x++;
}while (x<=n);
printf("sum=\b%f",sum);
return(0);
}