#include <iostream>
#include <cmath>
using namespace std;

double solver(double i)
{
	double ans=1;
	if(i==0)
		return 1;
	else
	{
		for(int j=1;j<=i;j++)
			ans*=j;
	}	
	return 1.0/ans;
}
void main()
{
	double sum=0;
	cout<<"n e"<<endl;
	cout<<"- -----------"<<endl;
	cout.setf(ios::fixed);
	cout.setf(ios::showpoint);
	cout.precision(9);
	for(double i=0;i<10;i++)
	{
		sum=0;
		for(double j=0;j<=i;j++)
			sum+=solver(j);
		cout<<int(i)<<" "<<sum<<endl;
	}
}

• 你写的真麻烦 (0) TopBoy 2007-01-02 18:23:56