sanfenzhupi @ 2023-12-04 16:59:08
#include<iostream>
using namespace std;
int main()
{
int k = 0;
cin >> k;
double sum = 0;
for (double i = 1;; i++)
{
if (sum <k)
{
sum += 1 / i;
}
else
{
cout << i;
break;
}
}
system("pause");
return 0;
}
by penguin_is_cool @ 2023-12-04 17:06:27
@sanfenzhupi
可能是iostream在洛谷上不包含system("");试试用万能库:<bits/stdc++.h>
memset只用iostream在洛谷上也不行。
by penguin_is_cool @ 2023-12-04 17:07:40
@sanfenzhupi 不是你第8行那个for循环写的是个啥?
by sanfenzhupi @ 2023-12-04 17:22:48
#include<bits/stdc++.h>
using namespace std;
int main()
{
int k = 0;
cin >> k;
double sum = 0;
for (double i = 1;; i++)
{
sum += 1 / i;
if (sum > k)
{
cout << i;
break;
}
}
system("pause");
return 0;
}
@penguin_is_cool 又修改了一下,佬,您再看看这个咋样
by penguin_is_cool @ 2023-12-04 17:54:45
@sanfenzhupi emm,你那个for循环改成for (double i=0;i<1e9;i++)或者用while循环。
参考:
#include <iostream>
#include <cmath>
using namespace std;
int main(){
double n,i=1.0;
cin>>n;
double sum=0;
sum+=1.0/i;
while (sum<=n){
i++;
sum+=1/i;
}
cout<<i;
}
by sanfenzhupi @ 2023-12-04 18:43:48
@penguin_is_cool 好的,谢谢您
by chen__pengyu @ 2023-12-17 15:48:06
#include<iostream>
using namespace std;
int main() {
int k,n=0;
double b=0;
cin>>k;
while(b<=k) {
n++;
b=b+(double)1/n;
}
cout<<n;
return 0;
}
给你