View Code of Problem 48

#include<stdio.h>
int main()
{
	double m=1,z=2.0;
	int n;
	double t;
	double c;
	double sum=0.0;
	scanf("%d",&n);
	for(int i=0;i<n;i++)
	{
		c=z/m;
		sum+=c;
		t=z;
		z=z+m;
		m=t;
	}
	printf("%.6f",sum);
	return 0;
}