求助60

九头蛇 @ 2016-12-23 11:06:34

#include <iostream>
#include <stdio.h>
using namespace std;
int main( )
{
    int k,n;
    float m=0.00;
    cin>>k;
    for(n=1;n<=100000;n++)
      {
      m=m+1.0/n;
      if(m>k) break;
     }
     printf("%d",n);
    return 0;
}

by Hcf2002 @ 2016-12-23 12:32:16

换成while试试

by 郑王围霸 @ 2016-12-29 16:57:02

#include <cstdio>
#include <iostream>
using namespace std;
int main()
{
    int k;
    double s=0;
    cin >> k;
    int i=0;
    while (s <=k)
    {
        i++;
        s +=1.0/i;
    }
    cout << i << endl;
    return 0;
}

by woshihasong @ 2017-01-06 22:36:41

100000太小了，Sn>15 n=1835421

by zm不是猪你信吗 @ 2017-01-09 19:04:56

#include<iostream>
using namespace std;
int main()
{
    double a,b=0;
    cin>>a;
    while(a>=0)
    {
        b++;
        a-=1/b;
    }
    cout<<b;
    return 0;
}