#include <iostream>
using namespace std;
struct Card{
	int n;
	double oper;
};
int count(double oper,int n)
{
	if((oper - 1.0/n) < 0)
		return 1;
	else
		return (1 + count(oper - 1.0/n,n + 1));
}
int main()
{
	Card card[10001];
	int i,j;
	for(i = 0;card[i - 1].oper != 0;i++)
		cin>>card[i].oper;
	i--;
	for(j = 0;j < i;j++)
		card[j].n = count(card[j].oper,2);
	for(j = 0;j < i;j++)
		cout<<card[j].n<<" card(s)"<<endl;

	return 0;
}

十分不明白，运营的结果没有错误。
难不成是我理解错题目的意思了？