谁可以帮忙看看问题出在哪了？显示RE

P1035 [NOIP2002 普及组] 级数求和

aaaa___ @ 2018-07-25 19:26:33

include<cstdio>

using namespace std; int main() { int n=0,t=0,k; double Sn; scanf("%d",k); while(Sn<=k) {

  ++n;
  t=1/n;
  Sn+=t;

} printf("%d",n); return 0; }

by Smile_Cindy @ 2018-07-26 15:23:10

@列王纷争你Sn要置0

by aaaa___ @ 2018-07-26 18:10:58

@Alpha 哦哦谢谢我去试试！

by aaaa___ @ 2018-07-26 19:02:00

@Alpha 这个也试过了还是一样

by aaaa___ @ 2018-07-26 19:13:19

@Alpha 是不是定义DOUBLE量中的0有什么要特别注意的？

by Smile_Cindy @ 2018-07-27 09:01:20

@列王纷争 Sn要置零

by Smile_Cindy @ 2018-07-27 09:01:50

@列王纷争如果不置零，Sn的值就是随机的

by aaaa___ @ 2018-07-27 21:11:53

@Alpha #include<cstdio> using namespace std; int main() { int n=0,k; double Sn=0,t=0; scanf("%d",k); while(Sn<=k) { n++; t=1.0/n; Sn+=t; } printf("%d",n); return 0; }

by Smile_Cindy @ 2018-07-27 21:37:51

@列王纷争错了，应为：scanf("%d",&k)

by Smile_Cindy @ 2018-07-27 21:38:49

@列王纷争

#include<cstdio>
using namespace std;
int main()
{
    int n=0,k;
    double Sn=0,t=0;
    scanf("%d",&k);
    while(Sn<=k)
    {
        n++;
        t=1.0/n;
        Sn+=t;
    }
    printf("%d",n);
    return 0;
}

实测AC

by aaaa___ @ 2018-07-29 22:09:38

@Alpha 请问这两个有什么区别吗？