shirley97 @ 2016-08-16 21:56:17
#include<iostream>
using namespace std;
int main()
{
double s,k;
int n;
s=0; n=1;
cin>>k;
do {s=s+1/n; n++; } while (s>k);
cout<<n<<endl;
return 0;
}
by shirley97 @ 2016-08-16 22:03:54
#include<iostream>
using namespace std;
int main()
{
double s,k;
int n;
s=0; n=0;
cin>>k;
while (s<=k)
{ n++; s+=1.0/n;} //1.0为什么就可以,1就不可以???
cout<<n<<endl;
return 0;
}
by 太阳之神2015 @ 2016-08-17 11:05:47
这里n是整型,整型除以整型‘/’号当做div
by 太阳之神2015 @ 2016-08-17 11:07:40
c++中除号两边有一个数是实数结果就为实数
by 太阳之神2015 @ 2016-08-17 11:08:36
@shirley97
by 韩小布2007 @ 2016-10-16 15:59:47
#include<iostream>
#include<cstdio>
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;
}