View Code of Problem 48

#include <stdio.h>
int main()
{
	float t,a=2.0,b=1.0,c,sum=0;
  	int n;
  	scanf("%d",&n);
  	while (n--)
        {
        	sum+=a/b;
          	t=a;
          	a=a+b;
          	b=t;
        
        
        }
  	printf("%.6f",sum);
 
 
 
 
}

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