p0.cpp

好东西,绝对是好东西,我向大家推荐

#include <iostream.h>
#include <stdio.h>
int main()
{
	double h,n;
	int i,j;
	while(cin>>i)
	{
		
		h=0;
		for(j=1;j<=i;j++)
		{
			n=j;
			h+=1.0/n;
		}
		printf("%.4f\n",h);
	}
}