e定义了？
by YeHaiFengYC2204 @ 2023-08-09 21:39:08
@[liu12073_](/user/997339)
by YeHaiFengYC2204 @ 2023-08-09 21:39:26
@[YeHaiFengYC2204](/user/561482) sorry，忘加了，以下是我的原始代码
```cpp
#include<bits/stdc++.h>
using namespace std;
int main() {
double s = getchar(),e = 2.0;
int q = 0;
while (s > 0) {
e *= 0.98;
s -= e;
q++;
}
cout << q << endl;
return 0;
}
```
by liu12073_ @ 2023-08-09 21:41:53
@[liu12073_](/user/997339) 什么鬼，你的程序样例输出38???
by YeHaiFengYC2204 @ 2023-08-09 21:43:07
@[YeHaiFengYC2204](/user/561482) 在我电脑上输出39的
by liu12073_ @ 2023-08-09 21:43:56
大哥，别用getchar()，这东西不识别小数点
by YeHaiFengYC2204 @ 2023-08-09 21:44:01
4.3和43在它眼里一模一样
by YeHaiFengYC2204 @ 2023-08-09 21:44:33
@[YeHaiFengYC2204](/user/561482) ok，我去试试
by liu12073_ @ 2023-08-09 21:45:22
0输出34，服了你这代码
by YeHaiFengYC2204 @ 2023-08-09 21:45:56
@[liu12073_](/user/997339)
by YeHaiFengYC2204 @ 2023-08-09 21:46:07