北大OJ_1003题：Hangover

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

int main()
{
  float sum = 0.0f;
  float n = 1.0f;

  float fVal = 0.0f;
  while( cin >> fVal )
  {
    sum = 0.0f;
    n = 1.0f;
    while( sum < fVal )
    {
      sum += 1.0/++n;
    }

    if ( fabs( n - 1 ) < 1e-6 )
    {
      break;
    }

    cout << n - 1 << " card(s)" << endl;
  }
}

作者：山丘儿