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

int main()
{
	int i;
	double e = 0.0;
    cout << "n " << 'e' << endl;
	cout << "- -----------" << endl;
	int Factorial(int n);
	for(i = 0; i < 10; i++)
	{
		e += 1.0 / Factorial(i);	
		cout << i << ' ' << setprecision(10) << e << endl;
	}
	return 0;
}

int Factorial(int n)
{
	int multipul = 1;
	for(int j = 1; j <= n; j++)
	{
		multipul = multipul * j;
	}
	return multipul;
}

• Re:求助：为什么e必须是double类型？setprecision(10)才通过，9就不对，为什么啊？ (44) tkchenhetian 2007-11-24 21:44:34
  • Re:求助：为什么e必须是double类型？setprecision(10)才通过，9就不对，为什么啊？ (390) hujinyong199 2007-12-11 22:26:46