View Code of Problem 48

#include<stdio.h>
int main(){
	int a=2,b=1,n,i,team;
  	double s=0;
  	scanf("%d",&n);
  	if(n>=10||n<=0)
          return 0;
 	 for(i=0;i<10;i++){
  	   s+=(1.0*a)/b;
           team=b;
           b=a;
           a=a+team;
  	}
  printf("%.6lf",s);
return 0 ;
}