View Code of Problem 48

#include <stdio.h>
int main(){
	
  int n,i;
  int f1=1,f2=2;
  double sum = f2/f1;
  scanf("%d",&n);
  for(i=0;i<n-1;i++){
  	f3 = f1+f2;
    	sum+=f3/f2;
    	f1=f2;
    	f2=f3;
  
  }
  printf("%.6f",sum);
 
return 0;
}
/*
Main.c: In function 'main':
Main.c:9:4: error: 'f3' undeclared (first use in this function)
    f3 = f1+f2;
    ^
Main.c:9:4: note: each undeclared identifier is reported only once for each function it appears in
*/