蒟蒻求助思路，全WA了qaq

waterblock79 @ 2018-10-07 11:17:47

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    int n=0,k,i;
    long double sn=8848;
    cin >> k;
    while(sn>k)
    {
       n++;
       sn=0;
       for(i=1;i<=n;i++)
       {
          sn=sn+(1/i);
       }
    }
    cout << n << endl;
    system("PAUSE");
    return EXIT_SUCCESS;
}

by skiy_gyx @ 2018-10-07 11:19:13

这道入门题您确定要思路

纯模拟OK?

#include<bits/stdc++.h>
using namespace std;
int main(){
    int k;
    cin>>k;

    double n=0.0;
    for(double i=1;;i++){
        n+=1/i;
        if(n>k){
            cout<<i<<endl;
            break;
        }
    }
    return 0;
}

by miaojiexi @ 2018-10-07 11:19:18

@waterblock79 long double 可能有点危险

by miaojiexi @ 2018-10-07 11:19:51

sn=sn+(1/i);

改sn=sn+(1.0/i);试试

by 森岛_帆高 @ 2018-10-07 11:20:43

8848。。。。

by Mr_Wu @ 2018-10-07 11:35:34

return EXIT_SUCCESS是啥。。

by DeviceContext @ 2018-10-07 11:37:47

system("pause");可怕。。。

by Eason_AC @ 2018-10-07 11:41:50

#include <bits/stdc++.h>
using namespace std;

int main() {
    double Sn=1;
    int k,i;
    cin>>k;
    for(i=2; ; i++) {
        Sn+=(double)1/i;
        if(Sn>k)
            break;
    }
    cout<<i;
    return 0;
}

这个题目水题呀，注意一下，不加double会发生很奇怪的事，参考一下，但别抄QAQ